81495960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1$

素因数の和:490

約数の個数: 256

約数和(自身を含む): 319334400

約数和(自身を除く): 237838440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 17, 20, 21, 24, 26, 28, 30, 34, 35, 39, 40, 42, 51, 52, 56, 60, 65, 68, 70, 78, 84, 85, 91, 102, 104, 105, 119, 120, 130, 136, 140, 156, 168, 170, 182, 195, 204, 210, 221, 238, 255, 260, 273, 280, 312, 340, 357, 364, 390, 408, 420, 439, 442, 455, 476, 510, 520, 546, 595, 663, 680, 714, 728, 780, 840, 878, 884, 910, 952, 1020, 1092, 1105, 1190, 1317, 1326, 1365, 1428, 1547, 1560, 1756, 1768, 1785, 1820, 2040, 2184, 2195, 2210, 2380, 2634, 2652, 2730, 2856, 3073, 3094, 3315, 3512, 3570, 3640, 4390, 4420, 4641, 4760, 5268, 5304, 5460, 5707, 6146, 6188, 6585, 6630, 7140, 7463, 7735, 8780, 8840, 9219, 9282, 10536, 10920, 11414, 12292, 12376, 13170, 13260, 14280, 14926, 15365, 15470, 17121, 17560, 18438, 18564, 22389, 22828, 23205, 24584, 26340, 26520, 28535, 29852, 30730, 30940, 34242, 36876, 37128, 37315, 39949, 44778, 45656, 46095, 46410, 52241, 52680, 57070, 59704, 61460, 61880, 68484, 73752, 74630, 79898, 85605, 89556, 92190, 92820, 97019, 104482, 111945, 114140, 119847, 122920, 136968, 149260, 156723, 159796, 171210, 179112, 184380, 185640, 194038, 199745, 208964, 223890, 228280, 239694, 261205, 291057, 298520, 313446, 319592, 342420, 368760, 388076, 399490, 417928, 447780, 479388, 485095, 522410, 582114, 599235, 626892, 679133, 684840, 776152, 783615, 798980, 895560, 958776, 970190, 1044820, 1164228, 1198470, 1253784, 1358266, 1455285, 1567230, 1597960, 1940380, 2037399, 2089640, 2328456, 2396940, 2716532, 2910570, 3134460, 3395665, 3880760, 4074798, 4793880, 5433064, 5821140, 6268920, 6791330, 8149596, 10186995, 11642280, 13582660, 16299192, 20373990, 27165320, 40747980, 81495960]

約数ペア:

[(1, 81495960), (2, 40747980), (3, 27165320), (4, 20373990), (5, 16299192), (6, 13582660), (7, 11642280), (8, 10186995), (10, 8149596), (12, 6791330), (13, 6268920), (14, 5821140), (15, 5433064), (17, 4793880), (20, 4074798), (21, 3880760), (24, 3395665), (26, 3134460), (28, 2910570), (30, 2716532), (34, 2396940), (35, 2328456), (39, 2089640), (40, 2037399), (42, 1940380), (51, 1597960), (52, 1567230), (56, 1455285), (60, 1358266), (65, 1253784), (68, 1198470), (70, 1164228), (78, 1044820), (84, 970190), (85, 958776), (91, 895560), (102, 798980), (104, 783615), (105, 776152), (119, 684840), (120, 679133), (130, 626892), (136, 599235), (140, 582114), (156, 522410), (168, 485095), (170, 479388), (182, 447780), (195, 417928), (204, 399490), (210, 388076), (221, 368760), (238, 342420), (255, 319592), (260, 313446), (273, 298520), (280, 291057), (312, 261205), (340, 239694), (357, 228280), (364, 223890), (390, 208964), (408, 199745), (420, 194038), (439, 185640), (442, 184380), (455, 179112), (476, 171210), (510, 159796), (520, 156723), (546, 149260), (595, 136968), (663, 122920), (680, 119847), (714, 114140), (728, 111945), (780, 104482), (840, 97019), (878, 92820), (884, 92190), (910, 89556), (952, 85605), (1020, 79898), (1092, 74630), (1105, 73752), (1190, 68484), (1317, 61880), (1326, 61460), (1365, 59704), (1428, 57070), (1547, 52680), (1560, 52241), (1756, 46410), (1768, 46095), (1785, 45656), (1820, 44778), (2040, 39949), (2184, 37315), (2195, 37128), (2210, 36876), (2380, 34242), (2634, 30940), (2652, 30730), (2730, 29852), (2856, 28535), (3073, 26520), (3094, 26340), (3315, 24584), (3512, 23205), (3570, 22828), (3640, 22389), (4390, 18564), (4420, 18438), (4641, 17560), (4760, 17121), (5268, 15470), (5304, 15365), (5460, 14926), (5707, 14280), (6146, 13260), (6188, 13170), (6585, 12376), (6630, 12292), (7140, 11414), (7463, 10920), (7735, 10536), (8780, 9282), (8840, 9219)]