21291127485

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{869203}}^1$

素因数の和:869305

約数の個数: 32

約数和(自身を含む): 36047628288

約数和(自身を除く): 14756500803

約数列:

[1, 3, 5, 15, 23, 69, 71, 115, 213, 345, 355, 1065, 1633, 4899, 8165, 24495, 869203, 2607609, 4346015, 13038045, 19991669, 59975007, 61713413, 99958345, 185140239, 299875035, 308567065, 925701195, 1419408499, 4258225497, 7097042495, 21291127485]

約数ペア:

[(1, 21291127485), (3, 7097042495), (5, 4258225497), (15, 1419408499), (23, 925701195), (69, 308567065), (71, 299875035), (115, 185140239), (213, 99958345), (345, 61713413), (355, 59975007), (1065, 19991669), (1633, 13038045), (4899, 4346015), (8165, 2607609), (24495, 869203)]