90997640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{499}}^1$

素因数の和:654

約数の個数: 64

約数和(自身を含む): 211680000

約数和(自身を除く): 120682360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 97, 188, 194, 235, 376, 388, 470, 485, 499, 776, 940, 970, 998, 1880, 1940, 1996, 2495, 3880, 3992, 4559, 4990, 9118, 9980, 18236, 19960, 22795, 23453, 36472, 45590, 46906, 48403, 91180, 93812, 96806, 117265, 182360, 187624, 193612, 234530, 242015, 387224, 469060, 484030, 938120, 968060, 1936120, 2274941, 4549882, 9099764, 11374705, 18199528, 22749410, 45498820, 90997640]

約数ペア:

[(1, 90997640), (2, 45498820), (4, 22749410), (5, 18199528), (8, 11374705), (10, 9099764), (20, 4549882), (40, 2274941), (47, 1936120), (94, 968060), (97, 938120), (188, 484030), (194, 469060), (235, 387224), (376, 242015), (388, 234530), (470, 193612), (485, 187624), (499, 182360), (776, 117265), (940, 96806), (970, 93812), (998, 91180), (1880, 48403), (1940, 46906), (1996, 45590), (2495, 36472), (3880, 23453), (3992, 22795), (4559, 19960), (4990, 18236), (9118, 9980)]