21337995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1973}}^1$

素因数の和:2091

約数の個数: 32

約数和(自身を含む): 39416832

約数和(自身を除く): 18078837

約数列:

[1, 3, 5, 7, 15, 21, 35, 103, 105, 309, 515, 721, 1545, 1973, 2163, 3605, 5919, 9865, 10815, 13811, 29595, 41433, 69055, 203219, 207165, 609657, 1016095, 1422533, 3048285, 4267599, 7112665, 21337995]

約数ペア:

[(1, 21337995), (3, 7112665), (5, 4267599), (7, 3048285), (15, 1422533), (21, 1016095), (35, 609657), (103, 207165), (105, 203219), (309, 69055), (515, 41433), (721, 29595), (1545, 13811), (1973, 10815), (2163, 9865), (3605, 5919)]