21066129

素因数分解:

$3^3\times 7^2\times {\mathrm{15923}}^1$

素因数の和:15946

約数の個数: 24

約数和(自身を含む): 36306720

約数和(自身を除く): 15240591

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15923, 47769, 111461, 143307, 334383, 429921, 780227, 1003149, 2340681, 3009447, 7022043, 21066129]

約数ペア:

[(1, 21066129), (3, 7022043), (7, 3009447), (9, 2340681), (21, 1003149), (27, 780227), (49, 429921), (63, 334383), (147, 143307), (189, 111461), (441, 47769), (1323, 15923)]