64508680

素因数分解:

$2^3\times 5^1\times {\mathrm{719}}^1\times {\mathrm{2243}}^1$

素因数の和:2973

約数の個数: 32

約数和(自身を含む): 145411200

約数和(自身を除く): 80902520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 719, 1438, 2243, 2876, 3595, 4486, 5752, 7190, 8972, 11215, 14380, 17944, 22430, 28760, 44860, 89720, 1612717, 3225434, 6450868, 8063585, 12901736, 16127170, 32254340, 64508680]

約数ペア:

[(1, 64508680), (2, 32254340), (4, 16127170), (5, 12901736), (8, 8063585), (10, 6450868), (20, 3225434), (40, 1612717), (719, 89720), (1438, 44860), (2243, 28760), (2876, 22430), (3595, 17944), (4486, 14380), (5752, 11215), (7190, 8972)]