21096476

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{661}}^1$

素因数の和:845

約数の個数: 24

約数和(自身を含む): 37813440

約数和(自身を除く): 16716964

約数列:

[1, 2, 4, 79, 101, 158, 202, 316, 404, 661, 1322, 2644, 7979, 15958, 31916, 52219, 66761, 104438, 133522, 208876, 267044, 5274119, 10548238, 21096476]

約数ペア:

[(1, 21096476), (2, 10548238), (4, 5274119), (79, 267044), (101, 208876), (158, 133522), (202, 104438), (316, 66761), (404, 52219), (661, 31916), (1322, 15958), (2644, 7979)]