78981560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{907}}^1$

素因数の和:1236

約数の個数: 64

約数和(自身を含む): 203973120

約数和(自身を除く): 124991560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 311, 622, 907, 1244, 1555, 1814, 2177, 2488, 3110, 3628, 4354, 4535, 6220, 6349, 7256, 8708, 9070, 10885, 12440, 12698, 17416, 18140, 21770, 25396, 31745, 36280, 43540, 50792, 63490, 87080, 126980, 253960, 282077, 564154, 1128308, 1410385, 1974539, 2256616, 2820770, 3949078, 5641540, 7898156, 9872695, 11283080, 15796312, 19745390, 39490780, 78981560]

約数ペア:

[(1, 78981560), (2, 39490780), (4, 19745390), (5, 15796312), (7, 11283080), (8, 9872695), (10, 7898156), (14, 5641540), (20, 3949078), (28, 2820770), (35, 2256616), (40, 1974539), (56, 1410385), (70, 1128308), (140, 564154), (280, 282077), (311, 253960), (622, 126980), (907, 87080), (1244, 63490), (1555, 50792), (1814, 43540), (2177, 36280), (2488, 31745), (3110, 25396), (3628, 21770), (4354, 18140), (4535, 17416), (6220, 12698), (6349, 12440), (7256, 10885), (8708, 9070)]