21043995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6911}}^1$

素因数の和:6955

約数の個数: 32

約数和(自身を含む): 39813120

約数和(自身を除く): 18769125

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 6911, 20733, 34555, 48377, 103665, 145131, 200419, 241885, 601257, 725655, 1002095, 1402933, 3006285, 4208799, 7014665, 21043995]

約数ペア:

[(1, 21043995), (3, 7014665), (5, 4208799), (7, 3006285), (15, 1402933), (21, 1002095), (29, 725655), (35, 601257), (87, 241885), (105, 200419), (145, 145131), (203, 103665), (435, 48377), (609, 34555), (1015, 20733), (3045, 6911)]