21397446

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{18869}}^1$

素因数の和:18890

約数の個数: 40

約数和(自身を含む): 54798480

約数和(自身を除く): 33401034

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 567, 1134, 18869, 37738, 56607, 113214, 132083, 169821, 264166, 339642, 396249, 509463, 792498, 1018926, 1188747, 1528389, 2377494, 3056778, 3566241, 7132482, 10698723, 21397446]

約数ペア:

[(1, 21397446), (2, 10698723), (3, 7132482), (6, 3566241), (7, 3056778), (9, 2377494), (14, 1528389), (18, 1188747), (21, 1018926), (27, 792498), (42, 509463), (54, 396249), (63, 339642), (81, 264166), (126, 169821), (162, 132083), (189, 113214), (378, 56607), (567, 37738), (1134, 18869)]