21845890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198599}}^1$

素因数の和:198617

約数の個数: 16

約数和(自身を含む): 42897600

約数和(自身を除く): 21051710

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198599, 397198, 992995, 1985990, 2184589, 4369178, 10922945, 21845890]

約数ペア:

[(1, 21845890), (2, 10922945), (5, 4369178), (10, 2184589), (11, 1985990), (22, 992995), (55, 397198), (110, 198599)]