21277319

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:168

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 5938681

約数列:

[1, 7, 17, 41, 49, 89, 119, 287, 343, 623, 697, 833, 1513, 2009, 3649, 4361, 4879, 5831, 10591, 14063, 25543, 30527, 34153, 62033, 74137, 178801, 239071, 434231, 518959, 1251607, 3039617, 21277319]

約数ペア:

[(1, 21277319), (7, 3039617), (17, 1251607), (41, 518959), (49, 434231), (89, 239071), (119, 178801), (287, 74137), (343, 62033), (623, 34153), (697, 30527), (833, 25543), (1513, 14063), (2009, 10591), (3649, 5831), (4361, 4879)]