28991305

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 12377015

約数列:

[1, 5, 7, 35, 41, 89, 205, 227, 287, 445, 623, 1135, 1435, 1589, 3115, 3649, 7945, 9307, 18245, 20203, 25543, 46535, 65149, 101015, 127715, 141421, 325745, 707105, 828323, 4141615, 5798261, 28991305]

約数ペア:

[(1, 28991305), (5, 5798261), (7, 4141615), (35, 828323), (41, 707105), (89, 325745), (205, 141421), (227, 127715), (287, 101015), (445, 65149), (623, 46535), (1135, 25543), (1435, 20203), (1589, 18245), (3115, 9307), (3649, 7945)]