18823220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5569}}^1$

素因数の和:5604

約数の個数: 36

約数和(自身を含む): 42811020

約数和(自身を除く): 23987800

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5569, 11138, 22276, 27845, 55690, 72397, 111380, 144794, 289588, 361985, 723970, 941161, 1447940, 1882322, 3764644, 4705805, 9411610, 18823220]

約数ペア:

[(1, 18823220), (2, 9411610), (4, 4705805), (5, 3764644), (10, 1882322), (13, 1447940), (20, 941161), (26, 723970), (52, 361985), (65, 289588), (130, 144794), (169, 111380), (260, 72397), (338, 55690), (676, 27845), (845, 22276), (1690, 11138), (3380, 5569)]