90205120

素因数分解:

$2^6\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2791}}^1$

素因数の和:2909

約数の個数: 56

約数和(自身を含む): 217005408

約数和(自身を除く): 126800288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 160, 202, 320, 404, 505, 808, 1010, 1616, 2020, 2791, 3232, 4040, 5582, 6464, 8080, 11164, 13955, 16160, 22328, 27910, 32320, 44656, 55820, 89312, 111640, 178624, 223280, 281891, 446560, 563782, 893120, 1127564, 1409455, 2255128, 2818910, 4510256, 5637820, 9020512, 11275640, 18041024, 22551280, 45102560, 90205120]

約数ペア:

[(1, 90205120), (2, 45102560), (4, 22551280), (5, 18041024), (8, 11275640), (10, 9020512), (16, 5637820), (20, 4510256), (32, 2818910), (40, 2255128), (64, 1409455), (80, 1127564), (101, 893120), (160, 563782), (202, 446560), (320, 281891), (404, 223280), (505, 178624), (808, 111640), (1010, 89312), (1616, 55820), (2020, 44656), (2791, 32320), (3232, 27910), (4040, 22328), (5582, 16160), (6464, 13955), (8080, 11164)]