21015018

素因数分解:

$2^1\times 3^3\times {\mathrm{389167}}^1$

素因数の和:389178

約数の個数: 16

約数和(自身を含む): 46700160

約数和(自身を除く): 25685142

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 389167, 778334, 1167501, 2335002, 3502503, 7005006, 10507509, 21015018]

約数ペア:

[(1, 21015018), (2, 10507509), (3, 7005006), (6, 3502503), (9, 2335002), (18, 1167501), (27, 778334), (54, 389167)]