64728760

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{37633}}^1$

素因数の和:37687

約数の個数: 32

約数和(自身を含む): 149030640

約数和(自身を除く): 84301880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 37633, 75266, 150532, 188165, 301064, 376330, 752660, 1505320, 1618219, 3236438, 6472876, 8091095, 12945752, 16182190, 32364380, 64728760]

約数ペア:

[(1, 64728760), (2, 32364380), (4, 16182190), (5, 12945752), (8, 8091095), (10, 6472876), (20, 3236438), (40, 1618219), (43, 1505320), (86, 752660), (172, 376330), (215, 301064), (344, 188165), (430, 150532), (860, 75266), (1720, 37633)]