20908293

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 33269760

約数和(自身を除く): 12361467

約数列:

[1, 3, 7, 21, 37, 71, 111, 213, 259, 379, 497, 777, 1137, 1491, 2627, 2653, 7881, 7959, 14023, 18389, 26909, 42069, 55167, 80727, 98161, 188363, 294483, 565089, 995633, 2986899, 6969431, 20908293]

約数ペア:

[(1, 20908293), (3, 6969431), (7, 2986899), (21, 995633), (37, 565089), (71, 294483), (111, 188363), (213, 98161), (259, 80727), (379, 55167), (497, 42069), (777, 26909), (1137, 18389), (1491, 14023), (2627, 7959), (2653, 7881)]