20905300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1237}}^1$

素因数の和:1277

約数の個数: 54

約数和(自身を含む): 49162218

約数和(自身を除く): 28256918

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 169, 260, 325, 338, 650, 676, 845, 1237, 1300, 1690, 2474, 3380, 4225, 4948, 6185, 8450, 12370, 16081, 16900, 24740, 30925, 32162, 61850, 64324, 80405, 123700, 160810, 209053, 321620, 402025, 418106, 804050, 836212, 1045265, 1608100, 2090530, 4181060, 5226325, 10452650, 20905300]

約数ペア:

[(1, 20905300), (2, 10452650), (4, 5226325), (5, 4181060), (10, 2090530), (13, 1608100), (20, 1045265), (25, 836212), (26, 804050), (50, 418106), (52, 402025), (65, 321620), (100, 209053), (130, 160810), (169, 123700), (260, 80405), (325, 64324), (338, 61850), (650, 32162), (676, 30925), (845, 24740), (1237, 16900), (1300, 16081), (1690, 12370), (2474, 8450), (3380, 6185), (4225, 4948)]