78557780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4219}}^1$

素因数の和:4261

約数の個数: 72

約数和(自身を含む): 202053600

約数和(自身を除く): 123495820

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1330, 1862, 2660, 3724, 4219, 4655, 8438, 9310, 16876, 18620, 21095, 29533, 42190, 59066, 80161, 84380, 118132, 147665, 160322, 206731, 295330, 320644, 400805, 413462, 561127, 590660, 801610, 826924, 1033655, 1122254, 1603220, 2067310, 2244508, 2805635, 3927889, 4134620, 5611270, 7855778, 11222540, 15711556, 19639445, 39278890, 78557780]

約数ペア:

[(1, 78557780), (2, 39278890), (4, 19639445), (5, 15711556), (7, 11222540), (10, 7855778), (14, 5611270), (19, 4134620), (20, 3927889), (28, 2805635), (35, 2244508), (38, 2067310), (49, 1603220), (70, 1122254), (76, 1033655), (95, 826924), (98, 801610), (133, 590660), (140, 561127), (190, 413462), (196, 400805), (245, 320644), (266, 295330), (380, 206731), (490, 160322), (532, 147665), (665, 118132), (931, 84380), (980, 80161), (1330, 59066), (1862, 42190), (2660, 29533), (3724, 21095), (4219, 18620), (4655, 16876), (8438, 9310)]