2101477820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{621739}}^1$

素因数の和:621774

約数の個数: 36

約数和(自身を含む): 4778693640

約数和(自身を除く): 2677215820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 621739, 1243478, 2486956, 3108695, 6217390, 8082607, 12434780, 16165214, 32330428, 40413035, 80826070, 105073891, 161652140, 210147782, 420295564, 525369455, 1050738910, 2101477820]

約数ペア:

[(1, 2101477820), (2, 1050738910), (4, 525369455), (5, 420295564), (10, 210147782), (13, 161652140), (20, 105073891), (26, 80826070), (52, 40413035), (65, 32330428), (130, 16165214), (169, 12434780), (260, 8082607), (338, 6217390), (676, 3108695), (845, 2486956), (1690, 1243478), (3380, 621739)]