21418828

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{229}}^1\times {\mathrm{349}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 38318000

約数和(自身を除く): 16899172

約数列:

[1, 2, 4, 67, 134, 229, 268, 349, 458, 698, 916, 1396, 15343, 23383, 30686, 46766, 61372, 79921, 93532, 159842, 319684, 5354707, 10709414, 21418828]

約数ペア:

[(1, 21418828), (2, 10709414), (4, 5354707), (67, 319684), (134, 159842), (229, 93532), (268, 79921), (349, 61372), (458, 46766), (698, 30686), (916, 23383), (1396, 15343)]