21438774

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:354

約数の個数: 72

約数和(自身を含む): 54774720

約数和(自身を除く): 33335946

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 109, 126, 147, 218, 223, 294, 327, 441, 446, 654, 669, 763, 882, 981, 1338, 1526, 1561, 1962, 2007, 2289, 3122, 4014, 4578, 4683, 5341, 6867, 9366, 10682, 10927, 13734, 14049, 16023, 21854, 24307, 28098, 32046, 32781, 48069, 48614, 65562, 72921, 96138, 98343, 145842, 170149, 196686, 218763, 340298, 437526, 510447, 1020894, 1191043, 1531341, 2382086, 3062682, 3573129, 7146258, 10719387, 21438774]

約数ペア:

[(1, 21438774), (2, 10719387), (3, 7146258), (6, 3573129), (7, 3062682), (9, 2382086), (14, 1531341), (18, 1191043), (21, 1020894), (42, 510447), (49, 437526), (63, 340298), (98, 218763), (109, 196686), (126, 170149), (147, 145842), (218, 98343), (223, 96138), (294, 72921), (327, 65562), (441, 48614), (446, 48069), (654, 32781), (669, 32046), (763, 28098), (882, 24307), (981, 21854), (1338, 16023), (1526, 14049), (1561, 13734), (1962, 10927), (2007, 10682), (2289, 9366), (3122, 6867), (4014, 5341), (4578, 4683)]