81260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 181440

約数和(自身を除く): 100180

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 239, 340, 478, 956, 1195, 2390, 4063, 4780, 8126, 16252, 20315, 40630, 81260]

約数ペア:

[(1, 81260), (2, 40630), (4, 20315), (5, 16252), (10, 8126), (17, 4780), (20, 4063), (34, 2390), (68, 1195), (85, 956), (170, 478), (239, 340)]