21616231

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 28667520

約数和(自身を除く): 7051289

約数列:

[1, 7, 13, 17, 89, 91, 119, 157, 221, 623, 1099, 1157, 1513, 1547, 2041, 2669, 8099, 10591, 13973, 14287, 18683, 19669, 34697, 97811, 137683, 181649, 237541, 242879, 1271543, 1662787, 3088033, 21616231]

約数ペア:

[(1, 21616231), (7, 3088033), (13, 1662787), (17, 1271543), (89, 242879), (91, 237541), (119, 181649), (157, 137683), (221, 97811), (623, 34697), (1099, 19669), (1157, 18683), (1513, 14287), (1547, 13973), (2041, 10591), (2669, 8099)]