21721416

素因数分解:

$2^3\times 3^1\times {\mathrm{905059}}^1$

素因数の和:905068

約数の個数: 16

約数和(自身を含む): 54303600

約数和(自身を除く): 32582184

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 905059, 1810118, 2715177, 3620236, 5430354, 7240472, 10860708, 21721416]

約数ペア:

[(1, 21721416), (2, 10860708), (3, 7240472), (4, 5430354), (6, 3620236), (8, 2715177), (12, 1810118), (24, 905059)]