20998278

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{18517}}^1$

素因数の和:18538

約数の個数: 40

約数和(自身を含む): 53776272

約数和(自身を除く): 32777994

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 567, 1134, 18517, 37034, 55551, 111102, 129619, 166653, 259238, 333306, 388857, 499959, 777714, 999918, 1166571, 1499877, 2333142, 2999754, 3499713, 6999426, 10499139, 20998278]

約数ペア:

[(1, 20998278), (2, 10499139), (3, 6999426), (6, 3499713), (7, 2999754), (9, 2333142), (14, 1499877), (18, 1166571), (21, 999918), (27, 777714), (42, 499959), (54, 388857), (63, 333306), (81, 259238), (126, 166653), (162, 129619), (189, 111102), (378, 55551), (567, 37034), (1134, 18517)]