81071240

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1487}}^1$

素因数の和:1574

約数の個数: 64

約数和(自身を含む): 192844800

約数和(自身を除く): 111773560

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 47, 58, 94, 116, 145, 188, 232, 235, 290, 376, 470, 580, 940, 1160, 1363, 1487, 1880, 2726, 2974, 5452, 5948, 6815, 7435, 10904, 11896, 13630, 14870, 27260, 29740, 43123, 54520, 59480, 69889, 86246, 139778, 172492, 215615, 279556, 344984, 349445, 431230, 559112, 698890, 862460, 1397780, 1724920, 2026781, 2795560, 4053562, 8107124, 10133905, 16214248, 20267810, 40535620, 81071240]

約数ペア:

[(1, 81071240), (2, 40535620), (4, 20267810), (5, 16214248), (8, 10133905), (10, 8107124), (20, 4053562), (29, 2795560), (40, 2026781), (47, 1724920), (58, 1397780), (94, 862460), (116, 698890), (145, 559112), (188, 431230), (232, 349445), (235, 344984), (290, 279556), (376, 215615), (470, 172492), (580, 139778), (940, 86246), (1160, 69889), (1363, 59480), (1487, 54520), (1880, 43123), (2726, 29740), (2974, 27260), (5452, 14870), (5948, 13630), (6815, 11896), (7435, 10904)]