21214305

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{1069}}^1$

素因数の和:1100

約数の個数: 60

約数和(自身を含む): 44278740

約数和(自身を除く): 23064435

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 1069, 1323, 2205, 2835, 3207, 3969, 5345, 6615, 7483, 9621, 16035, 19845, 22449, 28863, 37415, 48105, 52381, 67347, 86589, 112245, 144315, 157143, 202041, 261905, 336735, 432945, 471429, 606123, 785715, 1010205, 1414287, 2357145, 3030615, 4242861, 7071435, 21214305]

約数ペア:

[(1, 21214305), (3, 7071435), (5, 4242861), (7, 3030615), (9, 2357145), (15, 1414287), (21, 1010205), (27, 785715), (35, 606123), (45, 471429), (49, 432945), (63, 336735), (81, 261905), (105, 202041), (135, 157143), (147, 144315), (189, 112245), (245, 86589), (315, 67347), (405, 52381), (441, 48105), (567, 37415), (735, 28863), (945, 22449), (1069, 19845), (1323, 16035), (2205, 9621), (2835, 7483), (3207, 6615), (3969, 5345)]