19345700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:477

約数の個数: 72

約数和(自身を含む): 46976160

約数和(自身を除く): 27630460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 43, 44, 50, 55, 86, 100, 110, 172, 215, 220, 275, 409, 430, 473, 550, 818, 860, 946, 1075, 1100, 1636, 1892, 2045, 2150, 2365, 4090, 4300, 4499, 4730, 8180, 8998, 9460, 10225, 11825, 17587, 17996, 20450, 22495, 23650, 35174, 40900, 44990, 47300, 70348, 87935, 89980, 112475, 175870, 193457, 224950, 351740, 386914, 439675, 449900, 773828, 879350, 967285, 1758700, 1934570, 3869140, 4836425, 9672850, 19345700]

約数ペア:

[(1, 19345700), (2, 9672850), (4, 4836425), (5, 3869140), (10, 1934570), (11, 1758700), (20, 967285), (22, 879350), (25, 773828), (43, 449900), (44, 439675), (50, 386914), (55, 351740), (86, 224950), (100, 193457), (110, 175870), (172, 112475), (215, 89980), (220, 87935), (275, 70348), (409, 47300), (430, 44990), (473, 40900), (550, 35174), (818, 23650), (860, 22495), (946, 20450), (1075, 17996), (1100, 17587), (1636, 11825), (1892, 10225), (2045, 9460), (2150, 8998), (2365, 8180), (4090, 4730), (4300, 4499)]