28021240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53887}}^1$

素因数の和:53911

約数の個数: 32

約数和(自身を含む): 67898880

約数和(自身を除く): 39877640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 53887, 107774, 215548, 269435, 431096, 538870, 700531, 1077740, 1401062, 2155480, 2802124, 3502655, 5604248, 7005310, 14010620, 28021240]

約数ペア:

[(1, 28021240), (2, 14010620), (4, 7005310), (5, 5604248), (8, 3502655), (10, 2802124), (13, 2155480), (20, 1401062), (26, 1077740), (40, 700531), (52, 538870), (65, 431096), (104, 269435), (130, 215548), (260, 107774), (520, 53887)]