12561531640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{227729}}^1$

素因数の和:227944

約数の個数: 64

約数和(自身を含む): 32465188800

約数和(自身を除く): 19903657160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 394, 788, 985, 1379, 1576, 1970, 2758, 3940, 5516, 6895, 7880, 11032, 13790, 27580, 55160, 227729, 455458, 910916, 1138645, 1594103, 1821832, 2277290, 3188206, 4554580, 6376412, 7970515, 9109160, 12752824, 15941030, 31882060, 44862613, 63764120, 89725226, 179450452, 224313065, 314038291, 358900904, 448626130, 628076582, 897252260, 1256153164, 1570191455, 1794504520, 2512306328, 3140382910, 6280765820, 12561531640]

約数ペア:

[(1, 12561531640), (2, 6280765820), (4, 3140382910), (5, 2512306328), (7, 1794504520), (8, 1570191455), (10, 1256153164), (14, 897252260), (20, 628076582), (28, 448626130), (35, 358900904), (40, 314038291), (56, 224313065), (70, 179450452), (140, 89725226), (197, 63764120), (280, 44862613), (394, 31882060), (788, 15941030), (985, 12752824), (1379, 9109160), (1576, 7970515), (1970, 6376412), (2758, 4554580), (3940, 3188206), (5516, 2277290), (6895, 1821832), (7880, 1594103), (11032, 1138645), (13790, 910916), (27580, 455458), (55160, 227729)]