21578800

素因数分解:

$2^4\times 5^2\times {\mathrm{73}}^1\times {\mathrm{739}}^1$

素因数の和:830

約数の個数: 60

約数和(自身を含む): 52624360

約数和(自身を除く): 31045560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 73, 80, 100, 146, 200, 292, 365, 400, 584, 730, 739, 1168, 1460, 1478, 1825, 2920, 2956, 3650, 3695, 5840, 5912, 7300, 7390, 11824, 14600, 14780, 18475, 29200, 29560, 36950, 53947, 59120, 73900, 107894, 147800, 215788, 269735, 295600, 431576, 539470, 863152, 1078940, 1348675, 2157880, 2697350, 4315760, 5394700, 10789400, 21578800]

約数ペア:

[(1, 21578800), (2, 10789400), (4, 5394700), (5, 4315760), (8, 2697350), (10, 2157880), (16, 1348675), (20, 1078940), (25, 863152), (40, 539470), (50, 431576), (73, 295600), (80, 269735), (100, 215788), (146, 147800), (200, 107894), (292, 73900), (365, 59120), (400, 53947), (584, 36950), (730, 29560), (739, 29200), (1168, 18475), (1460, 14780), (1478, 14600), (1825, 11824), (2920, 7390), (2956, 7300), (3650, 5912), (3695, 5840)]