28851940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110969}}^1$

素因数の和:110991

約数の個数: 24

約数和(自身を含む): 65250360

約数和(自身を除く): 36398420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110969, 221938, 443876, 554845, 1109690, 1442597, 2219380, 2885194, 5770388, 7212985, 14425970, 28851940]

約数ペア:

[(1, 28851940), (2, 14425970), (4, 7212985), (5, 5770388), (10, 2885194), (13, 2219380), (20, 1442597), (26, 1109690), (52, 554845), (65, 443876), (130, 221938), (260, 110969)]