20762525

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{997}}^1$

素因数の和:1038

約数の個数: 36

約数和(自身を含む): 31742388

約数和(自身を除く): 10979863

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 245, 425, 595, 833, 997, 1225, 2975, 4165, 4985, 6979, 16949, 20825, 24925, 34895, 48853, 84745, 118643, 174475, 244265, 423725, 593215, 830501, 1221325, 2966075, 4152505, 20762525]

約数ペア:

[(1, 20762525), (5, 4152505), (7, 2966075), (17, 1221325), (25, 830501), (35, 593215), (49, 423725), (85, 244265), (119, 174475), (175, 118643), (245, 84745), (425, 48853), (595, 34895), (833, 24925), (997, 20825), (1225, 16949), (2975, 6979), (4165, 4985)]