21285290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163733}}^1$

素因数の和:163753

約数の個数: 16

約数和(自身を含む): 41260968

約数和(自身を除く): 19975678

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163733, 327466, 818665, 1637330, 2128529, 4257058, 10642645, 21285290]

約数ペア:

[(1, 21285290), (2, 10642645), (5, 4257058), (10, 2128529), (13, 1637330), (26, 818665), (65, 327466), (130, 163733)]