20421558

素因数分解:

$2^1\times 3^4\times {\mathrm{37}}^1\times {\mathrm{3407}}^1$

素因数の和:3458

約数の個数: 40

約数和(自身を含む): 47009952

約数和(自身を除く): 26588394

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 81, 111, 162, 222, 333, 666, 999, 1998, 2997, 3407, 5994, 6814, 10221, 20442, 30663, 61326, 91989, 126059, 183978, 252118, 275967, 378177, 551934, 756354, 1134531, 2269062, 3403593, 6807186, 10210779, 20421558]

約数ペア:

[(1, 20421558), (2, 10210779), (3, 6807186), (6, 3403593), (9, 2269062), (18, 1134531), (27, 756354), (37, 551934), (54, 378177), (74, 275967), (81, 252118), (111, 183978), (162, 126059), (222, 91989), (333, 61326), (666, 30663), (999, 20442), (1998, 10221), (2997, 6814), (3407, 5994)]