19879977

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{113}}^1\times {\mathrm{347}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 29039904

約数和(自身を除く): 9159927

約数列:

[1, 3, 13, 39, 113, 169, 339, 347, 507, 1041, 1469, 4407, 4511, 13533, 19097, 39211, 57291, 58643, 117633, 175929, 509743, 1529229, 6626659, 19879977]

約数ペア:

[(1, 19879977), (3, 6626659), (13, 1529229), (39, 509743), (113, 175929), (169, 117633), (339, 58643), (347, 57291), (507, 39211), (1041, 19097), (1469, 13533), (4407, 4511)]