21021609

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{613}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 33951744

約数和(自身を除く): 12930135

約数列:

[1, 3, 7, 21, 23, 69, 71, 161, 213, 483, 497, 613, 1491, 1633, 1839, 4291, 4899, 11431, 12873, 14099, 34293, 42297, 43523, 98693, 130569, 296079, 304661, 913983, 1001029, 3003087, 7007203, 21021609]

約数ペア:

[(1, 21021609), (3, 7007203), (7, 3003087), (21, 1001029), (23, 913983), (69, 304661), (71, 296079), (161, 130569), (213, 98693), (483, 43523), (497, 42297), (613, 34293), (1491, 14099), (1633, 12873), (1839, 11431), (4291, 4899)]