21260090

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13043}}^1$

素因数の和:13213

約数の個数: 16

約数和(自身を含む): 38505888

約数和(自身を除く): 17245798

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 13043, 26086, 65215, 130430, 2126009, 4252018, 10630045, 21260090]

約数ペア:

[(1, 21260090), (2, 10630045), (5, 4252018), (10, 2126009), (163, 130430), (326, 65215), (815, 26086), (1630, 13043)]