28004080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26927}}^1$

素因数の和:26953

約数の個数: 40

約数和(自身を含む): 70120512

約数和(自身を除く): 42116432

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 26927, 53854, 107708, 134635, 215416, 269270, 350051, 430832, 538540, 700102, 1077080, 1400204, 1750255, 2154160, 2800408, 3500510, 5600816, 7001020, 14002040, 28004080]

約数ペア:

[(1, 28004080), (2, 14002040), (4, 7001020), (5, 5600816), (8, 3500510), (10, 2800408), (13, 2154160), (16, 1750255), (20, 1400204), (26, 1077080), (40, 700102), (52, 538540), (65, 430832), (80, 350051), (104, 269270), (130, 215416), (208, 134635), (260, 107708), (520, 53854), (1040, 26927)]