1279206740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{17881}}^1$

素因数の和:17977

約数の個数: 72

約数和(自身を含む): 3167903592

約数和(自身を除く): 1888696852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 73, 98, 140, 146, 196, 245, 292, 365, 490, 511, 730, 980, 1022, 1460, 2044, 2555, 3577, 5110, 7154, 10220, 14308, 17881, 17885, 35762, 35770, 71524, 71540, 89405, 125167, 178810, 250334, 357620, 500668, 625835, 876169, 1251670, 1305313, 1752338, 2503340, 2610626, 3504676, 4380845, 5221252, 6526565, 8761690, 9137191, 13053130, 17523380, 18274382, 26106260, 36548764, 45685955, 63960337, 91371910, 127920674, 182743820, 255841348, 319801685, 639603370, 1279206740]

約数ペア:

[(1, 1279206740), (2, 639603370), (4, 319801685), (5, 255841348), (7, 182743820), (10, 127920674), (14, 91371910), (20, 63960337), (28, 45685955), (35, 36548764), (49, 26106260), (70, 18274382), (73, 17523380), (98, 13053130), (140, 9137191), (146, 8761690), (196, 6526565), (245, 5221252), (292, 4380845), (365, 3504676), (490, 2610626), (511, 2503340), (730, 1752338), (980, 1305313), (1022, 1251670), (1460, 876169), (2044, 625835), (2555, 500668), (3577, 357620), (5110, 250334), (7154, 178810), (10220, 125167), (14308, 89405), (17881, 71540), (17885, 71524), (35762, 35770)]