890646640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{856391}}^1$

素因数の和:856417

約数の個数: 40

約数和(自身を含む): 2230044768

約数和(自身を除く): 1339398128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 856391, 1712782, 3425564, 4281955, 6851128, 8563910, 11133083, 13702256, 17127820, 22266166, 34255640, 44532332, 55665415, 68511280, 89064664, 111330830, 178129328, 222661660, 445323320, 890646640]

約数ペア:

[(1, 890646640), (2, 445323320), (4, 222661660), (5, 178129328), (8, 111330830), (10, 89064664), (13, 68511280), (16, 55665415), (20, 44532332), (26, 34255640), (40, 22266166), (52, 17127820), (65, 13702256), (80, 11133083), (104, 8563910), (130, 6851128), (208, 4281955), (260, 3425564), (520, 1712782), (1040, 856391)]