20389976

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 39270000

約数和(自身を除く): 18880024

約数列:

[1, 2, 4, 8, 67, 109, 134, 218, 268, 349, 436, 536, 698, 872, 1396, 2792, 7303, 14606, 23383, 29212, 38041, 46766, 58424, 76082, 93532, 152164, 187064, 304328, 2548747, 5097494, 10194988, 20389976]

約数ペア:

[(1, 20389976), (2, 10194988), (4, 5097494), (8, 2548747), (67, 304328), (109, 187064), (134, 152164), (218, 93532), (268, 76082), (349, 58424), (436, 46766), (536, 38041), (698, 29212), (872, 23383), (1396, 14606), (2792, 7303)]