31479440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9151}}^1$

素因数の和:9207

約数の個数: 40

約数和(自身を含む): 74899968

約数和(自身を除く): 43420528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 9151, 18302, 36604, 45755, 73208, 91510, 146416, 183020, 366040, 393493, 732080, 786986, 1573972, 1967465, 3147944, 3934930, 6295888, 7869860, 15739720, 31479440]

約数ペア:

[(1, 31479440), (2, 15739720), (4, 7869860), (5, 6295888), (8, 3934930), (10, 3147944), (16, 1967465), (20, 1573972), (40, 786986), (43, 732080), (80, 393493), (86, 366040), (172, 183020), (215, 146416), (344, 91510), (430, 73208), (688, 45755), (860, 36604), (1720, 18302), (3440, 9151)]