128563960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:341

約数の個数: 128

約数和(自身を含む): 348364800

約数和(自身を除く): 219800840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 71, 116, 140, 142, 145, 203, 223, 232, 280, 284, 290, 355, 406, 446, 497, 568, 580, 710, 812, 892, 994, 1015, 1115, 1160, 1420, 1561, 1624, 1784, 1988, 2030, 2059, 2230, 2485, 2840, 3122, 3976, 4060, 4118, 4460, 4970, 6244, 6467, 7805, 8120, 8236, 8920, 9940, 10295, 12488, 12934, 14413, 15610, 15833, 16472, 19880, 20590, 25868, 28826, 31220, 31666, 32335, 41180, 45269, 51736, 57652, 62440, 63332, 64670, 72065, 79165, 82360, 90538, 110831, 115304, 126664, 129340, 144130, 158330, 181076, 221662, 226345, 258680, 288260, 316660, 362152, 443324, 452690, 459157, 554155, 576520, 633320, 886648, 905380, 918314, 1108310, 1810760, 1836628, 2216620, 2295785, 3214099, 3673256, 4433240, 4591570, 6428198, 9183140, 12856396, 16070495, 18366280, 25712792, 32140990, 64281980, 128563960]

約数ペア:

[(1, 128563960), (2, 64281980), (4, 32140990), (5, 25712792), (7, 18366280), (8, 16070495), (10, 12856396), (14, 9183140), (20, 6428198), (28, 4591570), (29, 4433240), (35, 3673256), (40, 3214099), (56, 2295785), (58, 2216620), (70, 1836628), (71, 1810760), (116, 1108310), (140, 918314), (142, 905380), (145, 886648), (203, 633320), (223, 576520), (232, 554155), (280, 459157), (284, 452690), (290, 443324), (355, 362152), (406, 316660), (446, 288260), (497, 258680), (568, 226345), (580, 221662), (710, 181076), (812, 158330), (892, 144130), (994, 129340), (1015, 126664), (1115, 115304), (1160, 110831), (1420, 90538), (1561, 82360), (1624, 79165), (1784, 72065), (1988, 64670), (2030, 63332), (2059, 62440), (2230, 57652), (2485, 51736), (2840, 45269), (3122, 41180), (3976, 32335), (4060, 31666), (4118, 31220), (4460, 28826), (4970, 25868), (6244, 20590), (6467, 19880), (7805, 16472), (8120, 15833), (8236, 15610), (8920, 14413), (9940, 12934), (10295, 12488)]