21233709

素因数分解:

$3^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{541}}^1$

素因数の和:650

約数の個数: 36

約数和(自身を含む): 36145980

約数和(自身を除く): 14912271

約数列:

[1, 3, 7, 9, 21, 49, 63, 89, 147, 267, 441, 541, 623, 801, 1623, 1869, 3787, 4361, 4869, 5607, 11361, 13083, 26509, 34083, 39249, 48149, 79527, 144447, 238581, 337043, 433341, 1011129, 2359301, 3033387, 7077903, 21233709]

約数ペア:

[(1, 21233709), (3, 7077903), (7, 3033387), (9, 2359301), (21, 1011129), (49, 433341), (63, 337043), (89, 238581), (147, 144447), (267, 79527), (441, 48149), (541, 39249), (623, 34083), (801, 26509), (1623, 13083), (1869, 11361), (3787, 5607), (4361, 4869)]