64629880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3251}}^1$

素因数の和:3340

約数の個数: 64

約数和(自身を含む): 168583680

約数和(自身を除く): 103953800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3251, 3976, 4970, 6502, 9940, 13004, 16255, 19880, 22757, 26008, 32510, 45514, 65020, 91028, 113785, 130040, 182056, 227570, 230821, 455140, 461642, 910280, 923284, 1154105, 1615747, 1846568, 2308210, 3231494, 4616420, 6462988, 8078735, 9232840, 12925976, 16157470, 32314940, 64629880]

約数ペア:

[(1, 64629880), (2, 32314940), (4, 16157470), (5, 12925976), (7, 9232840), (8, 8078735), (10, 6462988), (14, 4616420), (20, 3231494), (28, 2308210), (35, 1846568), (40, 1615747), (56, 1154105), (70, 923284), (71, 910280), (140, 461642), (142, 455140), (280, 230821), (284, 227570), (355, 182056), (497, 130040), (568, 113785), (710, 91028), (994, 65020), (1420, 45514), (1988, 32510), (2485, 26008), (2840, 22757), (3251, 19880), (3976, 16255), (4970, 13004), (6502, 9940)]