21221018

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{16657}}^1$

素因数の和:16686

約数の個数: 24

約数和(自身を含む): 39879252

約数和(自身を除く): 18658234

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 637, 1274, 16657, 33314, 116599, 216541, 233198, 433082, 816193, 1515787, 1632386, 3031574, 10610509, 21221018]

約数ペア:

[(1, 21221018), (2, 10610509), (7, 3031574), (13, 1632386), (14, 1515787), (26, 816193), (49, 433082), (91, 233198), (98, 216541), (182, 116599), (637, 33314), (1274, 16657)]