40215820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 86704128

約数和(自身を除く): 46488308

約数列:

[1, 2, 4, 5, 10, 20, 71, 127, 142, 223, 254, 284, 355, 446, 508, 635, 710, 892, 1115, 1270, 1420, 2230, 2540, 4460, 9017, 15833, 18034, 28321, 31666, 36068, 45085, 56642, 63332, 79165, 90170, 113284, 141605, 158330, 180340, 283210, 316660, 566420, 2010791, 4021582, 8043164, 10053955, 20107910, 40215820]

約数ペア:

[(1, 40215820), (2, 20107910), (4, 10053955), (5, 8043164), (10, 4021582), (20, 2010791), (71, 566420), (127, 316660), (142, 283210), (223, 180340), (254, 158330), (284, 141605), (355, 113284), (446, 90170), (508, 79165), (635, 63332), (710, 56642), (892, 45085), (1115, 36068), (1270, 31666), (1420, 28321), (2230, 18034), (2540, 15833), (4460, 9017)]