21965895

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 43917120

約数和(自身を除く): 21951225

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 137, 315, 411, 509, 685, 959, 1233, 1527, 2055, 2545, 2877, 3563, 4581, 4795, 6165, 7635, 8631, 10689, 14385, 17815, 22905, 32067, 43155, 53445, 69733, 160335, 209199, 348665, 488131, 627597, 1045995, 1464393, 2440655, 3137985, 4393179, 7321965, 21965895]

約数ペア:

[(1, 21965895), (3, 7321965), (5, 4393179), (7, 3137985), (9, 2440655), (15, 1464393), (21, 1045995), (35, 627597), (45, 488131), (63, 348665), (105, 209199), (137, 160335), (315, 69733), (411, 53445), (509, 43155), (685, 32067), (959, 22905), (1233, 17815), (1527, 14385), (2055, 10689), (2545, 8631), (2877, 7635), (3563, 6165), (4581, 4795)]