21780170

素因数分解:

$2^1\times 5^1\times {\mathrm{1153}}^1\times {\mathrm{1889}}^1$

素因数の和:3049

約数の個数: 16

約数和(自身を含む): 39259080

約数和(自身を除く): 17478910

約数列:

[1, 2, 5, 10, 1153, 1889, 2306, 3778, 5765, 9445, 11530, 18890, 2178017, 4356034, 10890085, 21780170]

約数ペア:

[(1, 21780170), (2, 10890085), (5, 4356034), (10, 2178017), (1153, 18890), (1889, 11530), (2306, 9445), (3778, 5765)]