21969638

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:288

約数の個数: 32

約数和(自身を含む): 35735808

約数和(自身を除く): 13766170

約数列:

[1, 2, 31, 37, 61, 62, 74, 122, 157, 314, 1147, 1891, 2257, 2294, 3782, 4514, 4867, 5809, 9577, 9734, 11618, 19154, 69967, 139934, 180079, 296887, 354349, 360158, 593774, 708698, 10984819, 21969638]

約数ペア:

[(1, 21969638), (2, 10984819), (31, 708698), (37, 593774), (61, 360158), (62, 354349), (74, 296887), (122, 180079), (157, 139934), (314, 69967), (1147, 19154), (1891, 11618), (2257, 9734), (2294, 9577), (3782, 5809), (4514, 4867)]