21038410

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{12907}}^1$

素因数の和:13077

約数の個数: 16

約数和(自身を含む): 38104416

約数和(自身を除く): 17066006

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 12907, 25814, 64535, 129070, 2103841, 4207682, 10519205, 21038410]

約数ペア:

[(1, 21038410), (2, 10519205), (5, 4207682), (10, 2103841), (163, 129070), (326, 64535), (815, 25814), (1630, 12907)]