18766420

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1801}}^1$

素因数の和:2331

約数の個数: 24

約数和(自身を含む): 39507048

約数和(自身を除く): 20740628

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 1801, 2084, 2605, 3602, 5210, 7204, 9005, 10420, 18010, 36020, 938321, 1876642, 3753284, 4691605, 9383210, 18766420]

約数ペア:

[(1, 18766420), (2, 9383210), (4, 4691605), (5, 3753284), (10, 1876642), (20, 938321), (521, 36020), (1042, 18010), (1801, 10420), (2084, 9005), (2605, 7204), (3602, 5210)]