20107839980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{463}}^1\times {\mathrm{27487}}^1$

素因数の和:28038

約数の個数: 48

約数和(自身を含む): 42854891520

約数和(自身を除く): 22747051540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 463, 790, 926, 1580, 1852, 2315, 4630, 9260, 27487, 36577, 54974, 73154, 109948, 137435, 146308, 182885, 274870, 365770, 549740, 731540, 2171473, 4342946, 8685892, 10857365, 12726481, 21714730, 25452962, 43429460, 50905924, 63632405, 127264810, 254529620, 1005391999, 2010783998, 4021567996, 5026959995, 10053919990, 20107839980]

約数ペア:

[(1, 20107839980), (2, 10053919990), (4, 5026959995), (5, 4021567996), (10, 2010783998), (20, 1005391999), (79, 254529620), (158, 127264810), (316, 63632405), (395, 50905924), (463, 43429460), (790, 25452962), (926, 21714730), (1580, 12726481), (1852, 10857365), (2315, 8685892), (4630, 4342946), (9260, 2171473), (27487, 731540), (36577, 549740), (54974, 365770), (73154, 274870), (109948, 182885), (137435, 146308)]