20099985

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 33187968

約数和(自身を除く): 13087983

約数列:

[1, 3, 5, 15, 53, 131, 159, 193, 265, 393, 579, 655, 795, 965, 1965, 2895, 6943, 10229, 20829, 25283, 30687, 34715, 51145, 75849, 104145, 126415, 153435, 379245, 1339999, 4019997, 6699995, 20099985]

約数ペア:

[(1, 20099985), (3, 6699995), (5, 4019997), (15, 1339999), (53, 379245), (131, 153435), (159, 126415), (193, 104145), (265, 75849), (393, 51145), (579, 34715), (655, 30687), (795, 25283), (965, 20829), (1965, 10229), (2895, 6943)]