19973090

素因数分解:

$2^1\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1801}}^1$

素因数の和:2917

約数の個数: 16

約数和(自身を含む): 36003960

約数和(自身を除く): 16030870

約数列:

[1, 2, 5, 10, 1109, 1801, 2218, 3602, 5545, 9005, 11090, 18010, 1997309, 3994618, 9986545, 19973090]

約数ペア:

[(1, 19973090), (2, 9986545), (5, 3994618), (10, 1997309), (1109, 18010), (1801, 11090), (2218, 9005), (3602, 5545)]