20687865

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6599}}^1$

素因数の和:6637

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 17328135

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6599, 19797, 32995, 72589, 98985, 125381, 217767, 362945, 376143, 626905, 1088835, 1379191, 1880715, 4137573, 6895955, 20687865]

約数ペア:

[(1, 20687865), (3, 6895955), (5, 4137573), (11, 1880715), (15, 1379191), (19, 1088835), (33, 626905), (55, 376143), (57, 362945), (95, 217767), (165, 125381), (209, 98985), (285, 72589), (627, 32995), (1045, 19797), (3135, 6599)]