978640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{941}}^1$

素因数の和:967

約数の個数: 40

約数和(自身を含む): 2452968

約数和(自身を除く): 1474328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 941, 1040, 1882, 3764, 4705, 7528, 9410, 12233, 15056, 18820, 24466, 37640, 48932, 61165, 75280, 97864, 122330, 195728, 244660, 489320, 978640]

約数ペア:

[(1, 978640), (2, 489320), (4, 244660), (5, 195728), (8, 122330), (10, 97864), (13, 75280), (16, 61165), (20, 48932), (26, 37640), (40, 24466), (52, 18820), (65, 15056), (80, 12233), (104, 9410), (130, 7528), (208, 4705), (260, 3764), (520, 1882), (941, 1040)]