21511090

素因数分解:

$2^1\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{2111}}^1$

素因数の和:3137

約数の個数: 16

約数和(自身を含む): 38776320

約数和(自身を除く): 17265230

約数列:

[1, 2, 5, 10, 1019, 2038, 2111, 4222, 5095, 10190, 10555, 21110, 2151109, 4302218, 10755545, 21511090]

約数ペア:

[(1, 21511090), (2, 10755545), (5, 4302218), (10, 2151109), (1019, 21110), (2038, 10555), (2111, 10190), (4222, 5095)]