18972884161

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{289543}}^1$

素因数の和:289621

約数の個数: 32

約数和(自身を含む): 25350156288

約数和(自身を除く): 6377272127

約数列:

[1, 7, 11, 23, 37, 77, 161, 253, 259, 407, 851, 1771, 2849, 5957, 9361, 65527, 289543, 2026801, 3184973, 6659489, 10713091, 22294811, 46616423, 73254379, 74991637, 117844001, 246401093, 512780653, 824908007, 1724807651, 2710412023, 18972884161]

約数ペア:

[(1, 18972884161), (7, 2710412023), (11, 1724807651), (23, 824908007), (37, 512780653), (77, 246401093), (161, 117844001), (253, 74991637), (259, 73254379), (407, 46616423), (851, 22294811), (1771, 10713091), (2849, 6659489), (5957, 3184973), (9361, 2026801), (65527, 289543)]