1245543920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1\times {\mathrm{761}}^1$

素因数の和:1314

約数の個数: 80

約数和(自身を含む): 2976372000

約数和(自身を除く): 1730828080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 499, 656, 761, 820, 998, 1522, 1640, 1996, 2495, 3044, 3280, 3805, 3992, 4990, 6088, 7610, 7984, 9980, 12176, 15220, 19960, 20459, 30440, 31201, 39920, 40918, 60880, 62402, 81836, 102295, 124804, 156005, 163672, 204590, 249608, 312010, 327344, 379739, 409180, 499216, 624020, 759478, 818360, 1248040, 1518956, 1636720, 1898695, 2496080, 3037912, 3797390, 6075824, 7594780, 15189560, 15569299, 30379120, 31138598, 62277196, 77846495, 124554392, 155692990, 249108784, 311385980, 622771960, 1245543920]

約数ペア:

[(1, 1245543920), (2, 622771960), (4, 311385980), (5, 249108784), (8, 155692990), (10, 124554392), (16, 77846495), (20, 62277196), (40, 31138598), (41, 30379120), (80, 15569299), (82, 15189560), (164, 7594780), (205, 6075824), (328, 3797390), (410, 3037912), (499, 2496080), (656, 1898695), (761, 1636720), (820, 1518956), (998, 1248040), (1522, 818360), (1640, 759478), (1996, 624020), (2495, 499216), (3044, 409180), (3280, 379739), (3805, 327344), (3992, 312010), (4990, 249608), (6088, 204590), (7610, 163672), (7984, 156005), (9980, 124804), (12176, 102295), (15220, 81836), (19960, 62402), (20459, 60880), (30440, 40918), (31201, 39920)]