90049040

素因数分解:

$2^4\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1129}}^1$

素因数の和:2139

約数の個数: 40

約数和(自身を含む): 209759640

約数和(自身を除く): 119710600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997, 1129, 1994, 2258, 3988, 4516, 4985, 5645, 7976, 9032, 9970, 11290, 15952, 18064, 19940, 22580, 39880, 45160, 79760, 90320, 1125613, 2251226, 4502452, 5628065, 9004904, 11256130, 18009808, 22512260, 45024520, 90049040]

約数ペア:

[(1, 90049040), (2, 45024520), (4, 22512260), (5, 18009808), (8, 11256130), (10, 9004904), (16, 5628065), (20, 4502452), (40, 2251226), (80, 1125613), (997, 90320), (1129, 79760), (1994, 45160), (2258, 39880), (3988, 22580), (4516, 19940), (4985, 18064), (5645, 15952), (7976, 11290), (9032, 9970)]