20928516

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{3413}}^1$

素因数の和:3500

約数の個数: 48

約数和(自身を含む): 56590464

約数和(自身を除く): 35661948

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 73, 84, 146, 219, 292, 438, 511, 876, 1022, 1533, 2044, 3066, 3413, 6132, 6826, 10239, 13652, 20478, 23891, 40956, 47782, 71673, 95564, 143346, 249149, 286692, 498298, 747447, 996596, 1494894, 1744043, 2989788, 3488086, 5232129, 6976172, 10464258, 20928516]

約数ペア:

[(1, 20928516), (2, 10464258), (3, 6976172), (4, 5232129), (6, 3488086), (7, 2989788), (12, 1744043), (14, 1494894), (21, 996596), (28, 747447), (42, 498298), (73, 286692), (84, 249149), (146, 143346), (219, 95564), (292, 71673), (438, 47782), (511, 40956), (876, 23891), (1022, 20478), (1533, 13652), (2044, 10239), (3066, 6826), (3413, 6132)]