210979660

素因数分解:

$2^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{5309}}^1$

素因数の和:7305

約数の個数: 24

約数和(自身を含む): 443363760

約数和(自身を除く): 232384100

約数列:

[1, 2, 4, 5, 10, 20, 1987, 3974, 5309, 7948, 9935, 10618, 19870, 21236, 26545, 39740, 53090, 106180, 10548983, 21097966, 42195932, 52744915, 105489830, 210979660]

約数ペア:

[(1, 210979660), (2, 105489830), (4, 52744915), (5, 42195932), (10, 21097966), (20, 10548983), (1987, 106180), (3974, 53090), (5309, 39740), (7948, 26545), (9935, 21236), (10618, 19870)]