21729505

素因数分解:

$5^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{1621}}^1$

素因数の和:2016

約数の個数: 16

約数和(自身を含む): 29896704

約数和(自身を除く): 8167199

約数列:

[1, 5, 7, 35, 383, 1621, 1915, 2681, 8105, 11347, 13405, 56735, 620843, 3104215, 4345901, 21729505]

約数ペア:

[(1, 21729505), (5, 4345901), (7, 3104215), (35, 620843), (383, 56735), (1621, 13405), (1915, 11347), (2681, 8105)]