21502418

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{28979}}^1$

素因数の和:29041

約数の個数: 16

約数和(自身を含む): 37558080

約数和(自身を除く): 16055662

約数列:

[1, 2, 7, 14, 53, 106, 371, 742, 28979, 57958, 202853, 405706, 1535887, 3071774, 10751209, 21502418]

約数ペア:

[(1, 21502418), (2, 10751209), (7, 3071774), (14, 1535887), (53, 405706), (106, 202853), (371, 57958), (742, 28979)]