20903560

素因数分解:

$2^3\times 5^1\times {\mathrm{479}}^1\times {\mathrm{1091}}^1$

素因数の和:1581

約数の個数: 32

約数和(自身を含む): 47174400

約数和(自身を除く): 26270840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 479, 958, 1091, 1916, 2182, 2395, 3832, 4364, 4790, 5455, 8728, 9580, 10910, 19160, 21820, 43640, 522589, 1045178, 2090356, 2612945, 4180712, 5225890, 10451780, 20903560]

約数ペア:

[(1, 20903560), (2, 10451780), (4, 5225890), (5, 4180712), (8, 2612945), (10, 2090356), (20, 1045178), (40, 522589), (479, 43640), (958, 21820), (1091, 19160), (1916, 10910), (2182, 9580), (2395, 8728), (3832, 5455), (4364, 4790)]