9985220

素因数分解:

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

素因数の和:489

約数の個数: 72

約数和(自身を含む): 25510464

約数和(自身を除く): 15525244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 443, 460, 490, 644, 805, 886, 980, 1127, 1610, 1772, 2215, 2254, 3101, 3220, 4430, 4508, 5635, 6202, 8860, 10189, 11270, 12404, 15505, 20378, 21707, 22540, 31010, 40756, 43414, 50945, 62020, 71323, 86828, 101890, 108535, 142646, 203780, 217070, 285292, 356615, 434140, 499261, 713230, 998522, 1426460, 1997044, 2496305, 4992610, 9985220]

約数ペア:

[(1, 9985220), (2, 4992610), (4, 2496305), (5, 1997044), (7, 1426460), (10, 998522), (14, 713230), (20, 499261), (23, 434140), (28, 356615), (35, 285292), (46, 217070), (49, 203780), (70, 142646), (92, 108535), (98, 101890), (115, 86828), (140, 71323), (161, 62020), (196, 50945), (230, 43414), (245, 40756), (322, 31010), (443, 22540), (460, 21707), (490, 20378), (644, 15505), (805, 12404), (886, 11270), (980, 10189), (1127, 8860), (1610, 6202), (1772, 5635), (2215, 4508), (2254, 4430), (3101, 3220)]