21000643218

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{2551}}^1\times {\mathrm{26903}}^1$

素因数の和:29479

約数の個数: 48

約数和(自身を含む): 48198623616

約数和(自身を除く): 27197980398

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 306, 2551, 5102, 7653, 15306, 22959, 26903, 43367, 45918, 53806, 80709, 86734, 130101, 161418, 242127, 260202, 390303, 457351, 484254, 780606, 914702, 1372053, 2744106, 4116159, 8232318, 68629553, 137259106, 205888659, 411777318, 617665977, 1166702401, 1235331954, 2333404802, 3500107203, 7000214406, 10500321609, 21000643218]

約数ペア:

[(1, 21000643218), (2, 10500321609), (3, 7000214406), (6, 3500107203), (9, 2333404802), (17, 1235331954), (18, 1166702401), (34, 617665977), (51, 411777318), (102, 205888659), (153, 137259106), (306, 68629553), (2551, 8232318), (5102, 4116159), (7653, 2744106), (15306, 1372053), (22959, 914702), (26903, 780606), (43367, 484254), (45918, 457351), (53806, 390303), (80709, 260202), (86734, 242127), (130101, 161418)]