201631820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{775507}}^1$

素因数の和:775529

約数の個数: 24

約数和(自身を含む): 455998704

約数和(自身を除く): 254366884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 775507, 1551014, 3102028, 3877535, 7755070, 10081591, 15510140, 20163182, 40326364, 50407955, 100815910, 201631820]

約数ペア:

[(1, 201631820), (2, 100815910), (4, 50407955), (5, 40326364), (10, 20163182), (13, 15510140), (20, 10081591), (26, 7755070), (52, 3877535), (65, 3102028), (130, 1551014), (260, 775507)]