31560920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11113}}^1$

素因数の和:11195

約数の個数: 32

約数和(自身を含む): 72018720

約数和(自身を除く): 40457800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 11113, 22226, 44452, 55565, 88904, 111130, 222260, 444520, 789023, 1578046, 3156092, 3945115, 6312184, 7890230, 15780460, 31560920]

約数ペア:

[(1, 31560920), (2, 15780460), (4, 7890230), (5, 6312184), (8, 3945115), (10, 3156092), (20, 1578046), (40, 789023), (71, 444520), (142, 222260), (284, 111130), (355, 88904), (568, 55565), (710, 44452), (1420, 22226), (2840, 11113)]