221980521

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{1907}}^1$

素因数の和:2181

約数の個数: 32

約数和(自身を含む): 354613248

約数和(自身を除く): 132632727

約数列:

[1, 3, 7, 21, 23, 69, 161, 241, 483, 723, 1687, 1907, 5061, 5543, 5721, 13349, 16629, 38801, 40047, 43861, 116403, 131583, 307027, 459587, 921081, 1378761, 3217109, 9651327, 10570501, 31711503, 73993507, 221980521]

約数ペア:

[(1, 221980521), (3, 73993507), (7, 31711503), (21, 10570501), (23, 9651327), (69, 3217109), (161, 1378761), (241, 921081), (483, 459587), (723, 307027), (1687, 131583), (1907, 116403), (5061, 43861), (5543, 40047), (5721, 38801), (13349, 16629)]