21294665

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3779}}^1$

素因数の和:3821

約数の個数: 24

約数和(自身を含む): 31026240

約数和(自身を除く): 9731575

約数列:

[1, 5, 7, 23, 35, 49, 115, 161, 245, 805, 1127, 3779, 5635, 18895, 26453, 86917, 132265, 185171, 434585, 608419, 925855, 3042095, 4258933, 21294665]

約数ペア:

[(1, 21294665), (5, 4258933), (7, 3042095), (23, 925855), (35, 608419), (49, 434585), (115, 185171), (161, 132265), (245, 86917), (805, 26453), (1127, 18895), (3779, 5635)]