20998992

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{62497}}^1$

素因数の和:62515

約数の個数: 40

約数和(自身を含む): 61998016

約数和(自身を除く): 40999024

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 62497, 124994, 187491, 249988, 374982, 437479, 499976, 749964, 874958, 999952, 1312437, 1499928, 1749916, 2624874, 2999856, 3499832, 5249748, 6999664, 10499496, 20998992]

約数ペア:

[(1, 20998992), (2, 10499496), (3, 6999664), (4, 5249748), (6, 3499832), (7, 2999856), (8, 2624874), (12, 1749916), (14, 1499928), (16, 1312437), (21, 999952), (24, 874958), (28, 749964), (42, 499976), (48, 437479), (56, 374982), (84, 249988), (112, 187491), (168, 124994), (336, 62497)]