129340840

素因数分解:

$2^3\times 5^1\times {\mathrm{3233521}}^1$

素因数の和:3233532

約数の個数: 16

約数和(自身を含む): 291016980

約数和(自身を除く): 161676140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3233521, 6467042, 12934084, 16167605, 25868168, 32335210, 64670420, 129340840]

約数ペア:

[(1, 129340840), (2, 64670420), (4, 32335210), (5, 25868168), (8, 16167605), (10, 12934084), (20, 6467042), (40, 3233521)]