31392140

素因数分解:

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

素因数の和:120761

約数の個数: 24

約数和(自身を含む): 70995120

約数和(自身を除く): 39602980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 120739, 241478, 482956, 603695, 1207390, 1569607, 2414780, 3139214, 6278428, 7848035, 15696070, 31392140]

約数ペア:

[(1, 31392140), (2, 15696070), (4, 7848035), (5, 6278428), (10, 3139214), (13, 2414780), (20, 1569607), (26, 1207390), (52, 603695), (65, 482956), (130, 241478), (260, 120739)]