19888904

素因数分解:

$2^3\times 7^2\times {\mathrm{113}}^1\times {\mathrm{449}}^1$

素因数の和:582

約数の個数: 48

約数和(自身を含む): 43861500

約数和(自身を除く): 23972596

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 113, 196, 226, 392, 449, 452, 791, 898, 904, 1582, 1796, 3143, 3164, 3592, 5537, 6286, 6328, 11074, 12572, 22001, 22148, 25144, 44002, 44296, 50737, 88004, 101474, 176008, 202948, 355159, 405896, 710318, 1420636, 2486113, 2841272, 4972226, 9944452, 19888904]

約数ペア:

[(1, 19888904), (2, 9944452), (4, 4972226), (7, 2841272), (8, 2486113), (14, 1420636), (28, 710318), (49, 405896), (56, 355159), (98, 202948), (113, 176008), (196, 101474), (226, 88004), (392, 50737), (449, 44296), (452, 44002), (791, 25144), (898, 22148), (904, 22001), (1582, 12572), (1796, 11074), (3143, 6328), (3164, 6286), (3592, 5537)]