217020140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{1987}}^1$

素因数の和:2166

約数の個数: 48

約数和(自身を含む): 470249472

約数和(自身を除く): 253229332

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 127, 172, 215, 254, 430, 508, 635, 860, 1270, 1987, 2540, 3974, 5461, 7948, 9935, 10922, 19870, 21844, 27305, 39740, 54610, 85441, 109220, 170882, 252349, 341764, 427205, 504698, 854410, 1009396, 1261745, 1708820, 2523490, 5046980, 10851007, 21702014, 43404028, 54255035, 108510070, 217020140]

約数ペア:

[(1, 217020140), (2, 108510070), (4, 54255035), (5, 43404028), (10, 21702014), (20, 10851007), (43, 5046980), (86, 2523490), (127, 1708820), (172, 1261745), (215, 1009396), (254, 854410), (430, 504698), (508, 427205), (635, 341764), (860, 252349), (1270, 170882), (1987, 109220), (2540, 85441), (3974, 54610), (5461, 39740), (7948, 27305), (9935, 21844), (10922, 19870)]