20017475

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1123}}^1$

素因数の和:1187

約数の個数: 24

約数和(自身を含む): 26760192

約数和(自身を除く): 6742717

約数列:

[1, 5, 23, 25, 31, 115, 155, 575, 713, 775, 1123, 3565, 5615, 17825, 25829, 28075, 34813, 129145, 174065, 645725, 800699, 870325, 4003495, 20017475]

約数ペア:

[(1, 20017475), (5, 4003495), (23, 870325), (25, 800699), (31, 645725), (115, 174065), (155, 129145), (575, 34813), (713, 28075), (775, 25829), (1123, 17825), (3565, 5615)]