77619920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19801}}^1$

素因数の和:19828

約数の個数: 60

約数和(自身を含む): 209940804

約数和(自身を除く): 132320884

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 19801, 39602, 79204, 99005, 138607, 158408, 198010, 277214, 316816, 396020, 554428, 693035, 792040, 970249, 1108856, 1386070, 1584080, 1940498, 2217712, 2772140, 3880996, 4851245, 5544280, 7761992, 9702490, 11088560, 15523984, 19404980, 38809960, 77619920]

約数ペア:

[(1, 77619920), (2, 38809960), (4, 19404980), (5, 15523984), (7, 11088560), (8, 9702490), (10, 7761992), (14, 5544280), (16, 4851245), (20, 3880996), (28, 2772140), (35, 2217712), (40, 1940498), (49, 1584080), (56, 1386070), (70, 1108856), (80, 970249), (98, 792040), (112, 693035), (140, 554428), (196, 396020), (245, 316816), (280, 277214), (392, 198010), (490, 158408), (560, 138607), (784, 99005), (980, 79204), (1960, 39602), (3920, 19801)]