215318980

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{24979}}^1$

素因数の和:25419

約数の個数: 24

約数和(自身を含む): 453237120

約数和(自身を除く): 237918140

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 4310, 8620, 24979, 49958, 99916, 124895, 249790, 499580, 10765949, 21531898, 43063796, 53829745, 107659490, 215318980]

約数ペア:

[(1, 215318980), (2, 107659490), (4, 53829745), (5, 43063796), (10, 21531898), (20, 10765949), (431, 499580), (862, 249790), (1724, 124895), (2155, 99916), (4310, 49958), (8620, 24979)]