61990420

素因数分解:

$2^2\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{1801}}^1$

素因数の和:3531

約数の個数: 24

約数和(自身を含む): 130327848

約数和(自身を除く): 68337428

約数列:

[1, 2, 4, 5, 10, 20, 1721, 1801, 3442, 3602, 6884, 7204, 8605, 9005, 17210, 18010, 34420, 36020, 3099521, 6199042, 12398084, 15497605, 30995210, 61990420]

約数ペア:

[(1, 61990420), (2, 30995210), (4, 15497605), (5, 12398084), (10, 6199042), (20, 3099521), (1721, 36020), (1801, 34420), (3442, 18010), (3602, 17210), (6884, 9005), (7204, 8605)]