55129720

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13381}}^1$

素因数の和:13495

約数の個数: 32

約数和(自身を含む): 125255520

約数和(自身を除く): 70125800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 13381, 26762, 53524, 66905, 107048, 133810, 267620, 535240, 1378243, 2756486, 5512972, 6891215, 11025944, 13782430, 27564860, 55129720]

約数ペア:

[(1, 55129720), (2, 27564860), (4, 13782430), (5, 11025944), (8, 6891215), (10, 5512972), (20, 2756486), (40, 1378243), (103, 535240), (206, 267620), (412, 133810), (515, 107048), (824, 66905), (1030, 53524), (2060, 26762), (4120, 13381)]