20219540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1259}}^1$

素因数の和:1352

約数の個数: 48

約数和(自身を含む): 46992960

約数和(自身を除く): 26773420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1259, 1460, 1606, 2518, 3212, 4015, 5036, 6295, 8030, 12590, 13849, 16060, 25180, 27698, 55396, 69245, 91907, 138490, 183814, 276980, 367628, 459535, 919070, 1010977, 1838140, 2021954, 4043908, 5054885, 10109770, 20219540]

約数ペア:

[(1, 20219540), (2, 10109770), (4, 5054885), (5, 4043908), (10, 2021954), (11, 1838140), (20, 1010977), (22, 919070), (44, 459535), (55, 367628), (73, 276980), (110, 183814), (146, 138490), (220, 91907), (292, 69245), (365, 55396), (730, 27698), (803, 25180), (1259, 16060), (1460, 13849), (1606, 12590), (2518, 8030), (3212, 6295), (4015, 5036)]