135931640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{261407}}^1$

素因数の和:261431

約数の個数: 32

約数和(自身を含む): 329374080

約数和(自身を除く): 193442440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 261407, 522814, 1045628, 1307035, 2091256, 2614070, 3398291, 5228140, 6796582, 10456280, 13593164, 16991455, 27186328, 33982910, 67965820, 135931640]

約数ペア:

[(1, 135931640), (2, 67965820), (4, 33982910), (5, 27186328), (8, 16991455), (10, 13593164), (13, 10456280), (20, 6796582), (26, 5228140), (40, 3398291), (52, 2614070), (65, 2091256), (104, 1307035), (130, 1045628), (260, 522814), (520, 261407)]