21154808

素因数分解:

$2^3\times {\mathrm{157}}^1\times {\mathrm{16843}}^1$

素因数の和:17006

約数の個数: 16

約数和(自身を含む): 39920280

約数和(自身を除く): 18765472

約数列:

[1, 2, 4, 8, 157, 314, 628, 1256, 16843, 33686, 67372, 134744, 2644351, 5288702, 10577404, 21154808]

約数ペア:

[(1, 21154808), (2, 10577404), (4, 5288702), (8, 2644351), (157, 134744), (314, 67372), (628, 33686), (1256, 16843)]