20904440

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3461}}^1$

素因数の和:3623

約数の個数: 32

約数和(自身を含む): 47360160

約数和(自身を除く): 26455720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 3461, 6040, 6922, 13844, 17305, 27688, 34610, 69220, 138440, 522611, 1045222, 2090444, 2613055, 4180888, 5226110, 10452220, 20904440]

約数ペア:

[(1, 20904440), (2, 10452220), (4, 5226110), (5, 4180888), (8, 2613055), (10, 2090444), (20, 1045222), (40, 522611), (151, 138440), (302, 69220), (604, 34610), (755, 27688), (1208, 17305), (1510, 13844), (3020, 6922), (3461, 6040)]