17728020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:825

約数の個数: 72

約数和(自身を含む): 54217800

約数和(自身を除く): 36489780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 149, 180, 298, 447, 596, 661, 745, 894, 1322, 1341, 1490, 1788, 1983, 2235, 2644, 2682, 2980, 3305, 3966, 4470, 5364, 5949, 6610, 6705, 7932, 8940, 9915, 11898, 13220, 13410, 19830, 23796, 26820, 29745, 39660, 59490, 98489, 118980, 196978, 295467, 393956, 492445, 590934, 886401, 984890, 1181868, 1477335, 1772802, 1969780, 2954670, 3545604, 4432005, 5909340, 8864010, 17728020]

約数ペア:

[(1, 17728020), (2, 8864010), (3, 5909340), (4, 4432005), (5, 3545604), (6, 2954670), (9, 1969780), (10, 1772802), (12, 1477335), (15, 1181868), (18, 984890), (20, 886401), (30, 590934), (36, 492445), (45, 393956), (60, 295467), (90, 196978), (149, 118980), (180, 98489), (298, 59490), (447, 39660), (596, 29745), (661, 26820), (745, 23796), (894, 19830), (1322, 13410), (1341, 13220), (1490, 11898), (1788, 9915), (1983, 8940), (2235, 7932), (2644, 6705), (2682, 6610), (2980, 5949), (3305, 5364), (3966, 4470)]