21502516

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 45368064

約数和(自身を除く): 23865548

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 173, 193, 322, 346, 386, 644, 692, 772, 1211, 1351, 2422, 2702, 3979, 4439, 4844, 5404, 7958, 8878, 15916, 17756, 27853, 31073, 33389, 55706, 62146, 66778, 111412, 124292, 133556, 233723, 467446, 767947, 934892, 1535894, 3071788, 5375629, 10751258, 21502516]

約数ペア:

[(1, 21502516), (2, 10751258), (4, 5375629), (7, 3071788), (14, 1535894), (23, 934892), (28, 767947), (46, 467446), (92, 233723), (161, 133556), (173, 124292), (193, 111412), (322, 66778), (346, 62146), (386, 55706), (644, 33389), (692, 31073), (772, 27853), (1211, 17756), (1351, 15916), (2422, 8878), (2702, 7958), (3979, 5404), (4439, 4844)]