15989205

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 26357760

約数和(自身を除く): 10368555

約数列:

[1, 3, 5, 15, 79, 103, 131, 237, 309, 393, 395, 515, 655, 1185, 1545, 1965, 8137, 10349, 13493, 24411, 31047, 40479, 40685, 51745, 67465, 122055, 155235, 202395, 1065947, 3197841, 5329735, 15989205]

約数ペア:

[(1, 15989205), (3, 5329735), (5, 3197841), (15, 1065947), (79, 202395), (103, 155235), (131, 122055), (237, 67465), (309, 51745), (393, 40685), (395, 40479), (515, 31047), (655, 24411), (1185, 13493), (1545, 10349), (1965, 8137)]