408097820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{120739}}^1$

素因数の和:120774

約数の個数: 36

約数和(自身を含む): 928007640

約数和(自身を除く): 519909820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 120739, 241478, 482956, 603695, 1207390, 1569607, 2414780, 3139214, 6278428, 7848035, 15696070, 20404891, 31392140, 40809782, 81619564, 102024455, 204048910, 408097820]

約数ペア:

[(1, 408097820), (2, 204048910), (4, 102024455), (5, 81619564), (10, 40809782), (13, 31392140), (20, 20404891), (26, 15696070), (52, 7848035), (65, 6278428), (130, 3139214), (169, 2414780), (260, 1569607), (338, 1207390), (676, 603695), (845, 482956), (1690, 241478), (3380, 120739)]