21120110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1901}}^1$

素因数の和:2020

約数の個数: 32

約数和(自身を含む): 41904864

約数和(自身を除く): 20784754

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 202, 505, 1010, 1111, 1901, 2222, 3802, 5555, 9505, 11110, 19010, 20911, 41822, 104555, 192001, 209110, 384002, 960005, 1920010, 2112011, 4224022, 10560055, 21120110]

約数ペア:

[(1, 21120110), (2, 10560055), (5, 4224022), (10, 2112011), (11, 1920010), (22, 960005), (55, 384002), (101, 209110), (110, 192001), (202, 104555), (505, 41822), (1010, 20911), (1111, 19010), (1901, 11110), (2222, 9505), (3802, 5555)]