131433980

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{12911}}^1$

素因数の和:13429

約数の個数: 24

約数和(自身を含む): 276575040

約数和(自身を除く): 145141060

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 10180, 12911, 25822, 51644, 64555, 129110, 258220, 6571699, 13143398, 26286796, 32858495, 65716990, 131433980]

約数ペア:

[(1, 131433980), (2, 65716990), (4, 32858495), (5, 26286796), (10, 13143398), (20, 6571699), (509, 258220), (1018, 129110), (2036, 64555), (2545, 51644), (5090, 25822), (10180, 12911)]