138171640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{487}}^1$

素因数の和:712

約数の個数: 64

約数和(自身を含む): 320967360

約数和(自身を除く): 182795720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 173, 205, 328, 346, 410, 487, 692, 820, 865, 974, 1384, 1640, 1730, 1948, 2435, 3460, 3896, 4870, 6920, 7093, 9740, 14186, 19480, 19967, 28372, 35465, 39934, 56744, 70930, 79868, 84251, 99835, 141860, 159736, 168502, 199670, 283720, 337004, 399340, 421255, 674008, 798680, 842510, 1685020, 3370040, 3454291, 6908582, 13817164, 17271455, 27634328, 34542910, 69085820, 138171640]

約数ペア:

[(1, 138171640), (2, 69085820), (4, 34542910), (5, 27634328), (8, 17271455), (10, 13817164), (20, 6908582), (40, 3454291), (41, 3370040), (82, 1685020), (164, 842510), (173, 798680), (205, 674008), (328, 421255), (346, 399340), (410, 337004), (487, 283720), (692, 199670), (820, 168502), (865, 159736), (974, 141860), (1384, 99835), (1640, 84251), (1730, 79868), (1948, 70930), (2435, 56744), (3460, 39934), (3896, 35465), (4870, 28372), (6920, 19967), (7093, 19480), (9740, 14186)]