21689402

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{29231}}^1$

素因数の和:29293

約数の個数: 16

約数和(自身を含む): 37884672

約数和(自身を除く): 16195270

約数列:

[1, 2, 7, 14, 53, 106, 371, 742, 29231, 58462, 204617, 409234, 1549243, 3098486, 10844701, 21689402]

約数ペア:

[(1, 21689402), (2, 10844701), (7, 3098486), (14, 1549243), (53, 409234), (106, 204617), (371, 58462), (742, 29231)]