21598521

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 34160640

約数和(自身を除く): 12562119

約数列:

[1, 3, 7, 21, 47, 79, 141, 237, 277, 329, 553, 831, 987, 1659, 1939, 3713, 5817, 11139, 13019, 21883, 25991, 39057, 65649, 77973, 91133, 153181, 273399, 459543, 1028501, 3085503, 7199507, 21598521]

約数ペア:

[(1, 21598521), (3, 7199507), (7, 3085503), (21, 1028501), (47, 459543), (79, 273399), (141, 153181), (237, 91133), (277, 77973), (329, 65649), (553, 39057), (831, 25991), (987, 21883), (1659, 13019), (1939, 11139), (3713, 5817)]