21615992

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{709}}^1$

素因数の和:855

約数の個数: 32

約数和(自身を含む): 42088800

約数和(自身を除く): 20472808

約数列:

[1, 2, 4, 8, 37, 74, 103, 148, 206, 296, 412, 709, 824, 1418, 2836, 3811, 5672, 7622, 15244, 26233, 30488, 52466, 73027, 104932, 146054, 209864, 292108, 584216, 2701999, 5403998, 10807996, 21615992]

約数ペア:

[(1, 21615992), (2, 10807996), (4, 5403998), (8, 2701999), (37, 584216), (74, 292108), (103, 209864), (148, 146054), (206, 104932), (296, 73027), (412, 52466), (709, 30488), (824, 26233), (1418, 15244), (2836, 7622), (3811, 5672)]