19987060

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6131}}^1$

素因数の和:6303

約数の個数: 24

約数和(自身を含む): 42237216

約数和(自身を除く): 22250156

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6131, 12262, 24524, 30655, 61310, 122620, 999353, 1998706, 3997412, 4996765, 9993530, 19987060]

約数ペア:

[(1, 19987060), (2, 9993530), (4, 4996765), (5, 3997412), (10, 1998706), (20, 999353), (163, 122620), (326, 61310), (652, 30655), (815, 24524), (1630, 12262), (3260, 6131)]