20909900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19009}}^1$

素因数の和:19034

約数の個数: 36

約数和(自身を含む): 49502040

約数和(自身を除く): 28592140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 19009, 38018, 76036, 95045, 190090, 209099, 380180, 418198, 475225, 836396, 950450, 1045495, 1900900, 2090990, 4181980, 5227475, 10454950, 20909900]

約数ペア:

[(1, 20909900), (2, 10454950), (4, 5227475), (5, 4181980), (10, 2090990), (11, 1900900), (20, 1045495), (22, 950450), (25, 836396), (44, 475225), (50, 418198), (55, 380180), (100, 209099), (110, 190090), (220, 95045), (275, 76036), (550, 38018), (1100, 19009)]