20722415

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 9137425

約数列:

[1, 5, 7, 31, 35, 71, 155, 217, 269, 355, 497, 1085, 1345, 1883, 2201, 2485, 8339, 9415, 11005, 15407, 19099, 41695, 58373, 77035, 95495, 133693, 291865, 592069, 668465, 2960345, 4144483, 20722415]

約数ペア:

[(1, 20722415), (5, 4144483), (7, 2960345), (31, 668465), (35, 592069), (71, 291865), (155, 133693), (217, 95495), (269, 77035), (355, 58373), (497, 41695), (1085, 19099), (1345, 15407), (1883, 11005), (2201, 9415), (2485, 8339)]