21781134

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:421

約数の個数: 48

約数和(自身を含む): 48926592

約数和(自身を除く): 27145458

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 107, 129, 214, 258, 263, 321, 387, 526, 642, 774, 789, 963, 1578, 1926, 2367, 4601, 4734, 9202, 11309, 13803, 22618, 27606, 28141, 33927, 41409, 56282, 67854, 82818, 84423, 101781, 168846, 203562, 253269, 506538, 1210063, 2420126, 3630189, 7260378, 10890567, 21781134]

約数ペア:

[(1, 21781134), (2, 10890567), (3, 7260378), (6, 3630189), (9, 2420126), (18, 1210063), (43, 506538), (86, 253269), (107, 203562), (129, 168846), (214, 101781), (258, 84423), (263, 82818), (321, 67854), (387, 56282), (526, 41409), (642, 33927), (774, 28141), (789, 27606), (963, 22618), (1578, 13803), (1926, 11309), (2367, 9202), (4601, 4734)]