254355320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{147881}}^1$

素因数の和:147935

約数の個数: 32

約数和(自身を含む): 585612720

約数和(自身を除く): 331257400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 147881, 295762, 591524, 739405, 1183048, 1478810, 2957620, 5915240, 6358883, 12717766, 25435532, 31794415, 50871064, 63588830, 127177660, 254355320]

約数ペア:

[(1, 254355320), (2, 127177660), (4, 63588830), (5, 50871064), (8, 31794415), (10, 25435532), (20, 12717766), (40, 6358883), (43, 5915240), (86, 2957620), (172, 1478810), (215, 1183048), (344, 739405), (430, 591524), (860, 295762), (1720, 147881)]