80487940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23813}}^1$

素因数の和:23848

約数の個数: 36

約数和(自身を含む): 183034404

約数和(自身を除く): 102546464

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 23813, 47626, 95252, 119065, 238130, 309569, 476260, 619138, 1238276, 1547845, 3095690, 4024397, 6191380, 8048794, 16097588, 20121985, 40243970, 80487940]

約数ペア:

[(1, 80487940), (2, 40243970), (4, 20121985), (5, 16097588), (10, 8048794), (13, 6191380), (20, 4024397), (26, 3095690), (52, 1547845), (65, 1238276), (130, 619138), (169, 476260), (260, 309569), (338, 238130), (676, 119065), (845, 95252), (1690, 47626), (3380, 23813)]