20387080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4283}}^1$

素因数の和:4318

約数の個数: 64

約数和(自身を含む): 55520640

約数和(自身を除く): 35133560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4283, 4760, 8566, 17132, 21415, 29981, 34264, 42830, 59962, 72811, 85660, 119924, 145622, 149905, 171320, 239848, 291244, 299810, 364055, 509677, 582488, 599620, 728110, 1019354, 1199240, 1456220, 2038708, 2548385, 2912440, 4077416, 5096770, 10193540, 20387080]

約数ペア:

[(1, 20387080), (2, 10193540), (4, 5096770), (5, 4077416), (7, 2912440), (8, 2548385), (10, 2038708), (14, 1456220), (17, 1199240), (20, 1019354), (28, 728110), (34, 599620), (35, 582488), (40, 509677), (56, 364055), (68, 299810), (70, 291244), (85, 239848), (119, 171320), (136, 149905), (140, 145622), (170, 119924), (238, 85660), (280, 72811), (340, 59962), (476, 42830), (595, 34264), (680, 29981), (952, 21415), (1190, 17132), (2380, 8566), (4283, 4760)]