64174720

素因数分解:

$2^7\times 5^1\times {\mathrm{197}}^1\times {\mathrm{509}}^1$

素因数の和:725

約数の個数: 64

約数和(自身を含む): 154499400

約数和(自身を除く): 90324680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 320, 394, 509, 640, 788, 985, 1018, 1576, 1970, 2036, 2545, 3152, 3940, 4072, 5090, 6304, 7880, 8144, 10180, 12608, 15760, 16288, 20360, 25216, 31520, 32576, 40720, 63040, 65152, 81440, 100273, 126080, 162880, 200546, 325760, 401092, 501365, 802184, 1002730, 1604368, 2005460, 3208736, 4010920, 6417472, 8021840, 12834944, 16043680, 32087360, 64174720]

約数ペア:

[(1, 64174720), (2, 32087360), (4, 16043680), (5, 12834944), (8, 8021840), (10, 6417472), (16, 4010920), (20, 3208736), (32, 2005460), (40, 1604368), (64, 1002730), (80, 802184), (128, 501365), (160, 401092), (197, 325760), (320, 200546), (394, 162880), (509, 126080), (640, 100273), (788, 81440), (985, 65152), (1018, 63040), (1576, 40720), (1970, 32576), (2036, 31520), (2545, 25216), (3152, 20360), (3940, 16288), (4072, 15760), (5090, 12608), (6304, 10180), (7880, 8144)]