9820280

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2531}}^1$

素因数の和:2639

約数の個数: 32

約数和(自身を含む): 22332240

約数和(自身を除く): 12511960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 2531, 3880, 5062, 10124, 12655, 20248, 25310, 50620, 101240, 245507, 491014, 982028, 1227535, 1964056, 2455070, 4910140, 9820280]

約数ペア:

[(1, 9820280), (2, 4910140), (4, 2455070), (5, 1964056), (8, 1227535), (10, 982028), (20, 491014), (40, 245507), (97, 101240), (194, 50620), (388, 25310), (485, 20248), (776, 12655), (970, 10124), (1940, 5062), (2531, 3880)]