19728016

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:332

約数の個数: 80

約数和(自身を含む): 48568320

約数和(自身を除く): 28840304

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 67, 77, 88, 112, 134, 154, 176, 239, 268, 308, 469, 478, 536, 616, 737, 938, 956, 1072, 1232, 1474, 1673, 1876, 1912, 2629, 2948, 3346, 3752, 3824, 5159, 5258, 5896, 6692, 7504, 10318, 10516, 11792, 13384, 16013, 18403, 20636, 21032, 26768, 32026, 36806, 41272, 42064, 64052, 73612, 82544, 112091, 128104, 147224, 176143, 224182, 256208, 294448, 352286, 448364, 704572, 896728, 1233001, 1409144, 1793456, 2466002, 2818288, 4932004, 9864008, 19728016]

約数ペア:

[(1, 19728016), (2, 9864008), (4, 4932004), (7, 2818288), (8, 2466002), (11, 1793456), (14, 1409144), (16, 1233001), (22, 896728), (28, 704572), (44, 448364), (56, 352286), (67, 294448), (77, 256208), (88, 224182), (112, 176143), (134, 147224), (154, 128104), (176, 112091), (239, 82544), (268, 73612), (308, 64052), (469, 42064), (478, 41272), (536, 36806), (616, 32026), (737, 26768), (938, 21032), (956, 20636), (1072, 18403), (1232, 16013), (1474, 13384), (1673, 11792), (1876, 10516), (1912, 10318), (2629, 7504), (2948, 6692), (3346, 5896), (3752, 5258), (3824, 5159)]