64995280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{419}}^1$

素因数の和:716

約数の個数: 80

約数和(自身を含む): 173738880

約数和(自身を除く): 108743600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 277, 280, 419, 554, 560, 838, 1108, 1385, 1676, 1939, 2095, 2216, 2770, 2933, 3352, 3878, 4190, 4432, 5540, 5866, 6704, 7756, 8380, 9695, 11080, 11732, 14665, 15512, 16760, 19390, 22160, 23464, 29330, 31024, 33520, 38780, 46928, 58660, 77560, 116063, 117320, 155120, 232126, 234640, 464252, 580315, 812441, 928504, 1160630, 1624882, 1857008, 2321260, 3249764, 4062205, 4642520, 6499528, 8124410, 9285040, 12999056, 16248820, 32497640, 64995280]

約数ペア:

[(1, 64995280), (2, 32497640), (4, 16248820), (5, 12999056), (7, 9285040), (8, 8124410), (10, 6499528), (14, 4642520), (16, 4062205), (20, 3249764), (28, 2321260), (35, 1857008), (40, 1624882), (56, 1160630), (70, 928504), (80, 812441), (112, 580315), (140, 464252), (277, 234640), (280, 232126), (419, 155120), (554, 117320), (560, 116063), (838, 77560), (1108, 58660), (1385, 46928), (1676, 38780), (1939, 33520), (2095, 31024), (2216, 29330), (2770, 23464), (2933, 22160), (3352, 19390), (3878, 16760), (4190, 15512), (4432, 14665), (5540, 11732), (5866, 11080), (6704, 9695), (7756, 8380)]