20870992

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{167}}^1$

素因数の和:355

約数の個数: 40

約数和(自身を含む): 41622336

約数和(自身を除く): 20751344

約数列:

[1, 2, 4, 8, 16, 73, 107, 146, 167, 214, 292, 334, 428, 584, 668, 856, 1168, 1336, 1712, 2672, 7811, 12191, 15622, 17869, 24382, 31244, 35738, 48764, 62488, 71476, 97528, 124976, 142952, 195056, 285904, 1304437, 2608874, 5217748, 10435496, 20870992]

約数ペア:

[(1, 20870992), (2, 10435496), (4, 5217748), (8, 2608874), (16, 1304437), (73, 285904), (107, 195056), (146, 142952), (167, 124976), (214, 97528), (292, 71476), (334, 62488), (428, 48764), (584, 35738), (668, 31244), (856, 24382), (1168, 17869), (1336, 15622), (1712, 12191), (2672, 7811)]