20402365

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{443}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 25105536

約数和(自身を除く): 4703171

約数列:

[1, 5, 61, 151, 305, 443, 755, 2215, 9211, 27023, 46055, 66893, 135115, 334465, 4080473, 20402365]

約数ペア:

[(1, 20402365), (5, 4080473), (61, 334465), (151, 135115), (305, 66893), (443, 46055), (755, 27023), (2215, 9211)]