129428540

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{77969}}^1$

素因数の和:78061

約数の個数: 24

約数和(自身を含む): 275078160

約数和(自身を除く): 145649620

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 77969, 155938, 311876, 389845, 779690, 1559380, 6471427, 12942854, 25885708, 32357135, 64714270, 129428540]

約数ペア:

[(1, 129428540), (2, 64714270), (4, 32357135), (5, 25885708), (10, 12942854), (20, 6471427), (83, 1559380), (166, 779690), (332, 389845), (415, 311876), (830, 155938), (1660, 77969)]