30820840

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7069}}^1$

素因数の和:7189

約数の個数: 32

約数和(自身を含む): 69993000

約数和(自身を除く): 39172160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 7069, 14138, 28276, 35345, 56552, 70690, 141380, 282760, 770521, 1541042, 3082084, 3852605, 6164168, 7705210, 15410420, 30820840]

約数ペア:

[(1, 30820840), (2, 15410420), (4, 7705210), (5, 6164168), (8, 3852605), (10, 3082084), (20, 1541042), (40, 770521), (109, 282760), (218, 141380), (436, 70690), (545, 56552), (872, 35345), (1090, 28276), (2180, 14138), (4360, 7069)]