398744220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{949391}}^1$

素因数の和:949410

約数の個数: 48

約数和(自身を含む): 1275982848

約数和(自身を除く): 877238628

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, 949391, 1898782, 2848173, 3797564, 4746955, 5696346, 6645737, 9493910, 11392692, 13291474, 14240865, 18987820, 19937211, 26582948, 28481730, 33228685, 39874422, 56963460, 66457370, 79748844, 99686055, 132914740, 199372110, 398744220]

約数ペア:

[(1, 398744220), (2, 199372110), (3, 132914740), (4, 99686055), (5, 79748844), (6, 66457370), (7, 56963460), (10, 39874422), (12, 33228685), (14, 28481730), (15, 26582948), (20, 19937211), (21, 18987820), (28, 14240865), (30, 13291474), (35, 11392692), (42, 9493910), (60, 6645737), (70, 5696346), (84, 4746955), (105, 3797564), (140, 2848173), (210, 1898782), (420, 949391)]