21885890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{168353}}^1$

素因数の和:168373

約数の個数: 16

約数和(自身を含む): 42425208

約数和(自身を除く): 20539318

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 168353, 336706, 841765, 1683530, 2188589, 4377178, 10942945, 21885890]

約数ペア:

[(1, 21885890), (2, 10942945), (5, 4377178), (10, 2188589), (13, 1683530), (26, 841765), (65, 336706), (130, 168353)]