18731660

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1022

約数の個数: 48

約数和(自身を含む): 42045696

約数和(自身を除く): 23314036

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 947, 989, 1894, 1978, 3788, 3956, 4735, 4945, 9470, 9890, 18940, 19780, 21781, 40721, 43562, 81442, 87124, 108905, 162884, 203605, 217810, 407210, 435620, 814420, 936583, 1873166, 3746332, 4682915, 9365830, 18731660]

約数ペア:

[(1, 18731660), (2, 9365830), (4, 4682915), (5, 3746332), (10, 1873166), (20, 936583), (23, 814420), (43, 435620), (46, 407210), (86, 217810), (92, 203605), (115, 162884), (172, 108905), (215, 87124), (230, 81442), (430, 43562), (460, 40721), (860, 21781), (947, 19780), (989, 18940), (1894, 9890), (1978, 9470), (3788, 4945), (3956, 4735)]