219223880

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{56501}}^1$

素因数の和:56609

約数の個数: 32

約数和(自身を含む): 498347640

約数和(自身を除く): 279123760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 56501, 113002, 226004, 282505, 452008, 565010, 1130020, 2260040, 5480597, 10961194, 21922388, 27402985, 43844776, 54805970, 109611940, 219223880]

約数ペア:

[(1, 219223880), (2, 109611940), (4, 54805970), (5, 43844776), (8, 27402985), (10, 21922388), (20, 10961194), (40, 5480597), (97, 2260040), (194, 1130020), (388, 565010), (485, 452008), (776, 282505), (970, 226004), (1940, 113002), (3880, 56501)]