21185817

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{2713}}^1$

素因数の和:2872

約数の個数: 16

約数和(自身を含む): 29962560

約数和(自身を除く): 8776743

約数列:

[1, 3, 19, 57, 137, 411, 2603, 2713, 7809, 8139, 51547, 154641, 371681, 1115043, 7061939, 21185817]

約数ペア:

[(1, 21185817), (3, 7061939), (19, 1115043), (57, 371681), (137, 154641), (411, 51547), (2603, 8139), (2713, 7809)]