19870445

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 28498176

約数和(自身を除く): 8627731

約数列:

[1, 5, 7, 35, 41, 61, 205, 227, 287, 305, 427, 1135, 1435, 1589, 2135, 2501, 7945, 9307, 12505, 13847, 17507, 46535, 65149, 69235, 87535, 96929, 325745, 484645, 567727, 2838635, 3974089, 19870445]

約数ペア:

[(1, 19870445), (5, 3974089), (7, 2838635), (35, 567727), (41, 484645), (61, 325745), (205, 96929), (227, 87535), (287, 69235), (305, 65149), (427, 46535), (1135, 17507), (1435, 13847), (1589, 12505), (2135, 9307), (2501, 7945)]