19882155

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 32892480

約数和(自身を除く): 13010325

約数列:

[1, 3, 5, 15, 53, 89, 159, 265, 267, 281, 445, 795, 843, 1335, 1405, 4215, 4717, 14151, 14893, 23585, 25009, 44679, 70755, 74465, 75027, 125045, 223395, 375135, 1325477, 3976431, 6627385, 19882155]

約数ペア:

[(1, 19882155), (3, 6627385), (5, 3976431), (15, 1325477), (53, 375135), (89, 223395), (159, 125045), (265, 75027), (267, 74465), (281, 70755), (445, 44679), (795, 25009), (843, 23585), (1335, 14893), (1405, 14151), (4215, 4717)]