1809344180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{211867}}^1$

素因数の和:211944

約数の個数: 48

約数和(自身を含む): 4413634176

約数和(自身を除く): 2604289996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 4270, 8540, 211867, 423734, 847468, 1059335, 1483069, 2118670, 2966138, 4237340, 5932276, 7415345, 12923887, 14830690, 25847774, 29661380, 51695548, 64619435, 90467209, 129238870, 180934418, 258477740, 361868836, 452336045, 904672090, 1809344180]

約数ペア:

[(1, 1809344180), (2, 904672090), (4, 452336045), (5, 361868836), (7, 258477740), (10, 180934418), (14, 129238870), (20, 90467209), (28, 64619435), (35, 51695548), (61, 29661380), (70, 25847774), (122, 14830690), (140, 12923887), (244, 7415345), (305, 5932276), (427, 4237340), (610, 2966138), (854, 2118670), (1220, 1483069), (1708, 1059335), (2135, 847468), (4270, 423734), (8540, 211867)]