15821001

素因数分解:

$3^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 27675648

約数和(自身を除く): 11854647

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 131, 189, 213, 243, 393, 497, 567, 639, 917, 1179, 1491, 1701, 1917, 2751, 3537, 4473, 5751, 8253, 9301, 10611, 13419, 17253, 24759, 27903, 31833, 40257, 65107, 74277, 83709, 120771, 195321, 222831, 251127, 585963, 753381, 1757889, 2260143, 5273667, 15821001]

約数ペア:

[(1, 15821001), (3, 5273667), (7, 2260143), (9, 1757889), (21, 753381), (27, 585963), (63, 251127), (71, 222831), (81, 195321), (131, 120771), (189, 83709), (213, 74277), (243, 65107), (393, 40257), (497, 31833), (567, 27903), (639, 24759), (917, 17253), (1179, 13419), (1491, 10611), (1701, 9301), (1917, 8253), (2751, 5751), (3537, 4473)]