28956980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{111373}}^1$

素因数の和:111395

約数の個数: 24

約数和(自身を含む): 65487912

約数和(自身を除く): 36530932

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 111373, 222746, 445492, 556865, 1113730, 1447849, 2227460, 2895698, 5791396, 7239245, 14478490, 28956980]

約数ペア:

[(1, 28956980), (2, 14478490), (4, 7239245), (5, 5791396), (10, 2895698), (13, 2227460), (20, 1447849), (26, 1113730), (52, 556865), (65, 445492), (130, 222746), (260, 111373)]