21770525

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4013}}^1$

素因数の和:4061

約数の個数: 24

約数和(自身を含む): 31855104

約数和(自身を除く): 10084579

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 4013, 5425, 20065, 28091, 100325, 124403, 140455, 622015, 702275, 870821, 3110075, 4354105, 21770525]

約数ペア:

[(1, 21770525), (5, 4354105), (7, 3110075), (25, 870821), (31, 702275), (35, 622015), (155, 140455), (175, 124403), (217, 100325), (775, 28091), (1085, 20065), (4013, 5425)]