19287813

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 27993600

約数和(自身を除く): 8705787

約数列:

[1, 3, 29, 47, 53, 87, 89, 141, 159, 267, 1363, 1537, 2491, 2581, 4089, 4183, 4611, 4717, 7473, 7743, 12549, 14151, 72239, 121307, 136793, 216717, 221699, 363921, 410379, 665097, 6429271, 19287813]

約数ペア:

[(1, 19287813), (3, 6429271), (29, 665097), (47, 410379), (53, 363921), (87, 221699), (89, 216717), (141, 136793), (159, 121307), (267, 72239), (1363, 14151), (1537, 12549), (2491, 7743), (2581, 7473), (4089, 4717), (4183, 4611)]