8618820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{20521}}^1$

素因数の和:20540

約数の個数: 48

約数和(自身を含む): 27581568

約数和(自身を除く): 18962748

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 20521, 41042, 61563, 82084, 102605, 123126, 143647, 205210, 246252, 287294, 307815, 410420, 430941, 574588, 615630, 718235, 861882, 1231260, 1436470, 1723764, 2154705, 2872940, 4309410, 8618820]

約数ペア:

[(1, 8618820), (2, 4309410), (3, 2872940), (4, 2154705), (5, 1723764), (6, 1436470), (7, 1231260), (10, 861882), (12, 718235), (14, 615630), (15, 574588), (20, 430941), (21, 410420), (28, 307815), (30, 287294), (35, 246252), (42, 205210), (60, 143647), (70, 123126), (84, 102605), (105, 82084), (140, 61563), (210, 41042), (420, 20521)]