64419860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103903}}^1$

素因数の和:103943

約数の個数: 24

約数和(自身を含む): 139646976

約数和(自身を除く): 75227116

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 103903, 207806, 415612, 519515, 1039030, 2078060, 3220993, 6441986, 12883972, 16104965, 32209930, 64419860]

約数ペア:

[(1, 64419860), (2, 32209930), (4, 16104965), (5, 12883972), (10, 6441986), (20, 3220993), (31, 2078060), (62, 1039030), (124, 519515), (155, 415612), (310, 207806), (620, 103903)]