21956445

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1621}}^1$

素因数の和:1682

約数の個数: 48

約数和(自身を含む): 44533632

約数和(自身を除く): 22577187

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 63, 105, 129, 215, 301, 315, 387, 645, 903, 1505, 1621, 1935, 2709, 4515, 4863, 8105, 11347, 13545, 14589, 24315, 34041, 56735, 69703, 72945, 102123, 170205, 209109, 348515, 487921, 510615, 627327, 1045545, 1463763, 2439605, 3136635, 4391289, 7318815, 21956445]

約数ペア:

[(1, 21956445), (3, 7318815), (5, 4391289), (7, 3136635), (9, 2439605), (15, 1463763), (21, 1045545), (35, 627327), (43, 510615), (45, 487921), (63, 348515), (105, 209109), (129, 170205), (215, 102123), (301, 72945), (315, 69703), (387, 56735), (645, 34041), (903, 24315), (1505, 14589), (1621, 13545), (1935, 11347), (2709, 8105), (4515, 4863)]