21075890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191599}}^1$

素因数の和:191617

約数の個数: 16

約数和(自身を含む): 41385600

約数和(自身を除く): 20309710

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191599, 383198, 957995, 1915990, 2107589, 4215178, 10537945, 21075890]

約数ペア:

[(1, 21075890), (2, 10537945), (5, 4215178), (10, 2107589), (11, 1915990), (22, 957995), (55, 383198), (110, 191599)]