20816655

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{503}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 14019825

約数列:

[1, 3, 5, 15, 31, 89, 93, 155, 267, 445, 465, 503, 1335, 1509, 2515, 2759, 7545, 8277, 13795, 15593, 41385, 44767, 46779, 77965, 134301, 223835, 233895, 671505, 1387777, 4163331, 6938885, 20816655]

約数ペア:

[(1, 20816655), (3, 6938885), (5, 4163331), (15, 1387777), (31, 671505), (89, 233895), (93, 223835), (155, 134301), (267, 77965), (445, 46779), (465, 44767), (503, 41385), (1335, 15593), (1509, 13795), (2515, 8277), (2759, 7545)]