290039554

素因数分解:

$2^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1\times {\mathrm{1021}}^1$

素因数の和:1330

約数の個数: 32

約数和(自身を含む): 505080576

約数和(自身を除く): 215041022

約数列:

[1, 2, 7, 14, 103, 197, 206, 394, 721, 1021, 1379, 1442, 2042, 2758, 7147, 14294, 20291, 40582, 105163, 142037, 201137, 210326, 284074, 402274, 736141, 1407959, 1472282, 2815918, 20717111, 41434222, 145019777, 290039554]

約数ペア:

[(1, 290039554), (2, 145019777), (7, 41434222), (14, 20717111), (103, 2815918), (197, 1472282), (206, 1407959), (394, 736141), (721, 402274), (1021, 284074), (1379, 210326), (1442, 201137), (2042, 142037), (2758, 105163), (7147, 40582), (14294, 20291)]