398506160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{383179}}^1$

素因数の和:383205

約数の個数: 40

約数和(自身を含む): 997800720

約数和(自身を除く): 599294560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 383179, 766358, 1532716, 1915895, 3065432, 3831790, 4981327, 6130864, 7663580, 9962654, 15327160, 19925308, 24906635, 30654320, 39850616, 49813270, 79701232, 99626540, 199253080, 398506160]

約数ペア:

[(1, 398506160), (2, 199253080), (4, 99626540), (5, 79701232), (8, 49813270), (10, 39850616), (13, 30654320), (16, 24906635), (20, 19925308), (26, 15327160), (40, 9962654), (52, 7663580), (65, 6130864), (80, 4981327), (104, 3831790), (130, 3065432), (208, 1915895), (260, 1532716), (520, 766358), (1040, 383179)]