21699864

素因数分解:

$2^3\times 3^2\times {\mathrm{43}}^2\times {\mathrm{163}}^1$

素因数の和:261

約数の個数: 72

約数和(自身を含む): 60538140

約数和(自身を除く): 38838276

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 43, 72, 86, 129, 163, 172, 258, 326, 344, 387, 489, 516, 652, 774, 978, 1032, 1304, 1467, 1548, 1849, 1956, 2934, 3096, 3698, 3912, 5547, 5868, 7009, 7396, 11094, 11736, 14018, 14792, 16641, 21027, 22188, 28036, 33282, 42054, 44376, 56072, 63081, 66564, 84108, 126162, 133128, 168216, 252324, 301387, 504648, 602774, 904161, 1205548, 1808322, 2411096, 2712483, 3616644, 5424966, 7233288, 10849932, 21699864]

約数ペア:

[(1, 21699864), (2, 10849932), (3, 7233288), (4, 5424966), (6, 3616644), (8, 2712483), (9, 2411096), (12, 1808322), (18, 1205548), (24, 904161), (36, 602774), (43, 504648), (72, 301387), (86, 252324), (129, 168216), (163, 133128), (172, 126162), (258, 84108), (326, 66564), (344, 63081), (387, 56072), (489, 44376), (516, 42054), (652, 33282), (774, 28036), (978, 22188), (1032, 21027), (1304, 16641), (1467, 14792), (1548, 14018), (1849, 11736), (1956, 11094), (2934, 7396), (3096, 7009), (3698, 5868), (3912, 5547)]