21382240

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12149}}^1$

素因数の和:12175

約数の個数: 48

約数和(自身を含む): 55112400

約数和(自身を除く): 33730160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12149, 24298, 48596, 60745, 97192, 121490, 133639, 194384, 242980, 267278, 388768, 485960, 534556, 668195, 971920, 1069112, 1336390, 1943840, 2138224, 2672780, 4276448, 5345560, 10691120, 21382240]

約数ペア:

[(1, 21382240), (2, 10691120), (4, 5345560), (5, 4276448), (8, 2672780), (10, 2138224), (11, 1943840), (16, 1336390), (20, 1069112), (22, 971920), (32, 668195), (40, 534556), (44, 485960), (55, 388768), (80, 267278), (88, 242980), (110, 194384), (160, 133639), (176, 121490), (220, 97192), (352, 60745), (440, 48596), (880, 24298), (1760, 12149)]