289753840

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{367}}^1$

素因数の和:590

約数の個数: 80

約数和(自身を含む): 689955840

約数和(自身を除く): 400202000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 139, 142, 278, 284, 355, 367, 556, 568, 695, 710, 734, 1112, 1136, 1390, 1420, 1468, 1835, 2224, 2780, 2840, 2936, 3670, 5560, 5680, 5872, 7340, 9869, 11120, 14680, 19738, 26057, 29360, 39476, 49345, 51013, 52114, 78952, 98690, 102026, 104228, 130285, 157904, 197380, 204052, 208456, 255065, 260570, 394760, 408104, 416912, 510130, 521140, 789520, 816208, 1020260, 1042280, 2040520, 2084560, 3621923, 4081040, 7243846, 14487692, 18109615, 28975384, 36219230, 57950768, 72438460, 144876920, 289753840]

約数ペア:

[(1, 289753840), (2, 144876920), (4, 72438460), (5, 57950768), (8, 36219230), (10, 28975384), (16, 18109615), (20, 14487692), (40, 7243846), (71, 4081040), (80, 3621923), (139, 2084560), (142, 2040520), (278, 1042280), (284, 1020260), (355, 816208), (367, 789520), (556, 521140), (568, 510130), (695, 416912), (710, 408104), (734, 394760), (1112, 260570), (1136, 255065), (1390, 208456), (1420, 204052), (1468, 197380), (1835, 157904), (2224, 130285), (2780, 104228), (2840, 102026), (2936, 98690), (3670, 78952), (5560, 52114), (5680, 51013), (5872, 49345), (7340, 39476), (9869, 29360), (11120, 26057), (14680, 19738)]