18627880

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4801}}^1$

素因数の和:4909

約数の個数: 32

約数和(自身を含む): 42353640

約数和(自身を除く): 23725760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4801, 9602, 19204, 24005, 38408, 48010, 96020, 192040, 465697, 931394, 1862788, 2328485, 3725576, 4656970, 9313940, 18627880]

約数ペア:

[(1, 18627880), (2, 9313940), (4, 4656970), (5, 3725576), (8, 2328485), (10, 1862788), (20, 931394), (40, 465697), (97, 192040), (194, 96020), (388, 48010), (485, 38408), (776, 24005), (970, 19204), (1940, 9602), (3880, 4801)]