19970440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:491

約数の個数: 96

約数和(自身を含む): 54665280

約数和(自身を除く): 34694840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 49, 56, 70, 92, 98, 115, 140, 161, 184, 196, 230, 245, 280, 322, 392, 443, 460, 490, 644, 805, 886, 920, 980, 1127, 1288, 1610, 1772, 1960, 2215, 2254, 3101, 3220, 3544, 4430, 4508, 5635, 6202, 6440, 8860, 9016, 10189, 11270, 12404, 15505, 17720, 20378, 21707, 22540, 24808, 31010, 40756, 43414, 45080, 50945, 62020, 71323, 81512, 86828, 101890, 108535, 124040, 142646, 173656, 203780, 217070, 285292, 356615, 407560, 434140, 499261, 570584, 713230, 868280, 998522, 1426460, 1997044, 2496305, 2852920, 3994088, 4992610, 9985220, 19970440]

約数ペア:

[(1, 19970440), (2, 9985220), (4, 4992610), (5, 3994088), (7, 2852920), (8, 2496305), (10, 1997044), (14, 1426460), (20, 998522), (23, 868280), (28, 713230), (35, 570584), (40, 499261), (46, 434140), (49, 407560), (56, 356615), (70, 285292), (92, 217070), (98, 203780), (115, 173656), (140, 142646), (161, 124040), (184, 108535), (196, 101890), (230, 86828), (245, 81512), (280, 71323), (322, 62020), (392, 50945), (443, 45080), (460, 43414), (490, 40756), (644, 31010), (805, 24808), (886, 22540), (920, 21707), (980, 20378), (1127, 17720), (1288, 15505), (1610, 12404), (1772, 11270), (1960, 10189), (2215, 9016), (2254, 8860), (3101, 6440), (3220, 6202), (3544, 5635), (4430, 4508)]