20442681

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2477}}^1$

素因数の和:2621

約数の個数: 24

約数和(自身を含む): 34017984

約数和(自身を除く): 13575303

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2477, 2751, 7431, 8253, 17339, 22293, 52017, 156051, 324487, 973461, 2271409, 2920383, 6814227, 20442681]

約数ペア:

[(1, 20442681), (3, 6814227), (7, 2920383), (9, 2271409), (21, 973461), (63, 324487), (131, 156051), (393, 52017), (917, 22293), (1179, 17339), (2477, 8253), (2751, 7431)]