398766160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{383429}}^1$

素因数の和:383455

約数の個数: 40

約数和(自身を含む): 998451720

約数和(自身を除く): 599685560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 383429, 766858, 1533716, 1917145, 3067432, 3834290, 4984577, 6134864, 7668580, 9969154, 15337160, 19938308, 24922885, 30674320, 39876616, 49845770, 79753232, 99691540, 199383080, 398766160]

約数ペア:

[(1, 398766160), (2, 199383080), (4, 99691540), (5, 79753232), (8, 49845770), (10, 39876616), (13, 30674320), (16, 24922885), (20, 19938308), (26, 15337160), (40, 9969154), (52, 7668580), (65, 6134864), (80, 4984577), (104, 3834290), (130, 3067432), (208, 1917145), (260, 1533716), (520, 766858), (1040, 383429)]