289370440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101891}}^1$

素因数の和:101973

約数の個数: 32

約数和(自身を含む): 660260160

約数和(自身を除く): 370889720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 101891, 203782, 407564, 509455, 815128, 1018910, 2037820, 4075640, 7234261, 14468522, 28937044, 36171305, 57874088, 72342610, 144685220, 289370440]

約数ペア:

[(1, 289370440), (2, 144685220), (4, 72342610), (5, 57874088), (8, 36171305), (10, 28937044), (20, 14468522), (40, 7234261), (71, 4075640), (142, 2037820), (284, 1018910), (355, 815128), (568, 509455), (710, 407564), (1420, 203782), (2840, 101891)]