3998820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{9521}}^1$

素因数の和:9540

約数の個数: 48

約数和(自身を含む): 12797568

約数和(自身を除く): 8798748

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, 9521, 19042, 28563, 38084, 47605, 57126, 66647, 95210, 114252, 133294, 142815, 190420, 199941, 266588, 285630, 333235, 399882, 571260, 666470, 799764, 999705, 1332940, 1999410, 3998820]

約数ペア:

[(1, 3998820), (2, 1999410), (3, 1332940), (4, 999705), (5, 799764), (6, 666470), (7, 571260), (10, 399882), (12, 333235), (14, 285630), (15, 266588), (20, 199941), (21, 190420), (28, 142815), (30, 133294), (35, 114252), (42, 95210), (60, 66647), (70, 57126), (84, 47605), (105, 38084), (140, 28563), (210, 19042), (420, 9521)]