20420638

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{359}}^1$

素因数の和:624

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 16904162

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 239, 359, 478, 718, 1673, 2513, 3346, 4063, 5026, 6103, 8126, 12206, 28441, 42721, 56882, 85442, 85801, 171602, 600607, 1201214, 1458617, 2917234, 10210319, 20420638]

約数ペア:

[(1, 20420638), (2, 10210319), (7, 2917234), (14, 1458617), (17, 1201214), (34, 600607), (119, 171602), (238, 85801), (239, 85442), (359, 56882), (478, 42721), (718, 28441), (1673, 12206), (2513, 8126), (3346, 6103), (4063, 5026)]