408899360

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{20123}}^1$

素因数の和:20265

約数の個数: 48

約数和(自身を含む): 973679616

約数和(自身を除く): 564780256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 1016, 1270, 2032, 2540, 4064, 5080, 10160, 20123, 20320, 40246, 80492, 100615, 160984, 201230, 321968, 402460, 643936, 804920, 1609840, 2555621, 3219680, 5111242, 10222484, 12778105, 20444968, 25556210, 40889936, 51112420, 81779872, 102224840, 204449680, 408899360]

約数ペア:

[(1, 408899360), (2, 204449680), (4, 102224840), (5, 81779872), (8, 51112420), (10, 40889936), (16, 25556210), (20, 20444968), (32, 12778105), (40, 10222484), (80, 5111242), (127, 3219680), (160, 2555621), (254, 1609840), (508, 804920), (635, 643936), (1016, 402460), (1270, 321968), (2032, 201230), (2540, 160984), (4064, 100615), (5080, 80492), (10160, 40246), (20123, 20320)]