261413880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:718

約数の個数: 256

約数和(自身を含む): 992839680

約数和(自身を除く): 731425800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 37, 39, 40, 42, 52, 56, 60, 65, 70, 74, 78, 84, 91, 104, 105, 111, 120, 130, 140, 148, 156, 168, 182, 185, 195, 210, 222, 259, 260, 273, 280, 296, 312, 364, 370, 390, 420, 444, 455, 481, 518, 520, 546, 555, 647, 728, 740, 777, 780, 840, 888, 910, 962, 1036, 1092, 1110, 1294, 1295, 1365, 1443, 1480, 1554, 1560, 1820, 1924, 1941, 2072, 2184, 2220, 2405, 2588, 2590, 2730, 2886, 3108, 3235, 3367, 3640, 3848, 3882, 3885, 4440, 4529, 4810, 5176, 5180, 5460, 5772, 6216, 6470, 6734, 7215, 7764, 7770, 8411, 9058, 9620, 9705, 10101, 10360, 10920, 11544, 12940, 13468, 13587, 14430, 15528, 15540, 16822, 16835, 18116, 19240, 19410, 20202, 22645, 23939, 25233, 25880, 26936, 27174, 28860, 31080, 33644, 33670, 36232, 38820, 40404, 42055, 45290, 47878, 50466, 50505, 54348, 57720, 58877, 67288, 67340, 67935, 71817, 77640, 80808, 84110, 90580, 95756, 100932, 101010, 108696, 117754, 119695, 126165, 134680, 135870, 143634, 167573, 168220, 176631, 181160, 191512, 201864, 202020, 235508, 239390, 252330, 271740, 287268, 294385, 311207, 335146, 336440, 353262, 359085, 404040, 471016, 478780, 502719, 504660, 543480, 574536, 588770, 622414, 670292, 706524, 718170, 837865, 883155, 933621, 957560, 1005438, 1009320, 1177540, 1244828, 1340584, 1413048, 1436340, 1556035, 1675730, 1766310, 1867242, 2010876, 2178449, 2355080, 2489656, 2513595, 2872680, 3112070, 3351460, 3532620, 3734484, 4021752, 4356898, 4668105, 5027190, 6224140, 6535347, 6702920, 7065240, 7468968, 8713796, 9336210, 10054380, 10892245, 12448280, 13070694, 17427592, 18672420, 20108760, 21784490, 26141388, 32676735, 37344840, 43568980, 52282776, 65353470, 87137960, 130706940, 261413880]

約数ペア:

[(1, 261413880), (2, 130706940), (3, 87137960), (4, 65353470), (5, 52282776), (6, 43568980), (7, 37344840), (8, 32676735), (10, 26141388), (12, 21784490), (13, 20108760), (14, 18672420), (15, 17427592), (20, 13070694), (21, 12448280), (24, 10892245), (26, 10054380), (28, 9336210), (30, 8713796), (35, 7468968), (37, 7065240), (39, 6702920), (40, 6535347), (42, 6224140), (52, 5027190), (56, 4668105), (60, 4356898), (65, 4021752), (70, 3734484), (74, 3532620), (78, 3351460), (84, 3112070), (91, 2872680), (104, 2513595), (105, 2489656), (111, 2355080), (120, 2178449), (130, 2010876), (140, 1867242), (148, 1766310), (156, 1675730), (168, 1556035), (182, 1436340), (185, 1413048), (195, 1340584), (210, 1244828), (222, 1177540), (259, 1009320), (260, 1005438), (273, 957560), (280, 933621), (296, 883155), (312, 837865), (364, 718170), (370, 706524), (390, 670292), (420, 622414), (444, 588770), (455, 574536), (481, 543480), (518, 504660), (520, 502719), (546, 478780), (555, 471016), (647, 404040), (728, 359085), (740, 353262), (777, 336440), (780, 335146), (840, 311207), (888, 294385), (910, 287268), (962, 271740), (1036, 252330), (1092, 239390), (1110, 235508), (1294, 202020), (1295, 201864), (1365, 191512), (1443, 181160), (1480, 176631), (1554, 168220), (1560, 167573), (1820, 143634), (1924, 135870), (1941, 134680), (2072, 126165), (2184, 119695), (2220, 117754), (2405, 108696), (2588, 101010), (2590, 100932), (2730, 95756), (2886, 90580), (3108, 84110), (3235, 80808), (3367, 77640), (3640, 71817), (3848, 67935), (3882, 67340), (3885, 67288), (4440, 58877), (4529, 57720), (4810, 54348), (5176, 50505), (5180, 50466), (5460, 47878), (5772, 45290), (6216, 42055), (6470, 40404), (6734, 38820), (7215, 36232), (7764, 33670), (7770, 33644), (8411, 31080), (9058, 28860), (9620, 27174), (9705, 26936), (10101, 25880), (10360, 25233), (10920, 23939), (11544, 22645), (12940, 20202), (13468, 19410), (13587, 19240), (14430, 18116), (15528, 16835), (15540, 16822)]