256395720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{577}}^1$

素因数の和:644

約数の個数: 192

約数和(自身を含む): 920545920

約数和(自身を除く): 664150200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 529, 552, 577, 644, 690, 805, 840, 920, 966, 1058, 1154, 1288, 1380, 1587, 1610, 1731, 1932, 2116, 2308, 2415, 2645, 2760, 2885, 3174, 3220, 3462, 3703, 3864, 4039, 4232, 4616, 4830, 5290, 5770, 6348, 6440, 6924, 7406, 7935, 8078, 8655, 9660, 10580, 11109, 11540, 12117, 12696, 13271, 13848, 14812, 15870, 16156, 17310, 18515, 19320, 20195, 21160, 22218, 23080, 24234, 26542, 29624, 31740, 32312, 34620, 37030, 39813, 40390, 44436, 48468, 53084, 55545, 60585, 63480, 66355, 69240, 74060, 79626, 80780, 88872, 92897, 96936, 106168, 111090, 121170, 132710, 148120, 159252, 161560, 185794, 199065, 222180, 242340, 265420, 278691, 305233, 318504, 371588, 398130, 444360, 464485, 484680, 530840, 557382, 610466, 743176, 796260, 915699, 928970, 1114764, 1220932, 1393455, 1526165, 1592520, 1831398, 1857940, 2136631, 2229528, 2441864, 2786910, 3052330, 3662796, 3715880, 4273262, 4578495, 5573820, 6104660, 6409893, 7325592, 8546524, 9156990, 10683155, 11147640, 12209320, 12819786, 17093048, 18313980, 21366310, 25639572, 32049465, 36627960, 42732620, 51279144, 64098930, 85465240, 128197860, 256395720]

約数ペア:

[(1, 256395720), (2, 128197860), (3, 85465240), (4, 64098930), (5, 51279144), (6, 42732620), (7, 36627960), (8, 32049465), (10, 25639572), (12, 21366310), (14, 18313980), (15, 17093048), (20, 12819786), (21, 12209320), (23, 11147640), (24, 10683155), (28, 9156990), (30, 8546524), (35, 7325592), (40, 6409893), (42, 6104660), (46, 5573820), (56, 4578495), (60, 4273262), (69, 3715880), (70, 3662796), (84, 3052330), (92, 2786910), (105, 2441864), (115, 2229528), (120, 2136631), (138, 1857940), (140, 1831398), (161, 1592520), (168, 1526165), (184, 1393455), (210, 1220932), (230, 1114764), (276, 928970), (280, 915699), (322, 796260), (345, 743176), (420, 610466), (460, 557382), (483, 530840), (529, 484680), (552, 464485), (577, 444360), (644, 398130), (690, 371588), (805, 318504), (840, 305233), (920, 278691), (966, 265420), (1058, 242340), (1154, 222180), (1288, 199065), (1380, 185794), (1587, 161560), (1610, 159252), (1731, 148120), (1932, 132710), (2116, 121170), (2308, 111090), (2415, 106168), (2645, 96936), (2760, 92897), (2885, 88872), (3174, 80780), (3220, 79626), (3462, 74060), (3703, 69240), (3864, 66355), (4039, 63480), (4232, 60585), (4616, 55545), (4830, 53084), (5290, 48468), (5770, 44436), (6348, 40390), (6440, 39813), (6924, 37030), (7406, 34620), (7935, 32312), (8078, 31740), (8655, 29624), (9660, 26542), (10580, 24234), (11109, 23080), (11540, 22218), (12117, 21160), (12696, 20195), (13271, 19320), (13848, 18515), (14812, 17310), (15870, 16156)]