21117816

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:433

約数の個数: 96

約数和(自身を含む): 61776000

約数和(自身を除く): 40658184

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 43, 57, 72, 76, 86, 114, 129, 152, 171, 172, 228, 258, 342, 344, 359, 387, 456, 516, 684, 718, 774, 817, 1032, 1077, 1368, 1436, 1548, 1634, 2154, 2451, 2872, 3096, 3231, 3268, 4308, 4902, 6462, 6536, 6821, 7353, 8616, 9804, 12924, 13642, 14706, 15437, 19608, 20463, 25848, 27284, 29412, 30874, 40926, 46311, 54568, 58824, 61389, 61748, 81852, 92622, 122778, 123496, 138933, 163704, 185244, 245556, 277866, 293303, 370488, 491112, 555732, 586606, 879909, 1111464, 1173212, 1759818, 2346424, 2639727, 3519636, 5279454, 7039272, 10558908, 21117816]

約数ペア:

[(1, 21117816), (2, 10558908), (3, 7039272), (4, 5279454), (6, 3519636), (8, 2639727), (9, 2346424), (12, 1759818), (18, 1173212), (19, 1111464), (24, 879909), (36, 586606), (38, 555732), (43, 491112), (57, 370488), (72, 293303), (76, 277866), (86, 245556), (114, 185244), (129, 163704), (152, 138933), (171, 123496), (172, 122778), (228, 92622), (258, 81852), (342, 61748), (344, 61389), (359, 58824), (387, 54568), (456, 46311), (516, 40926), (684, 30874), (718, 29412), (774, 27284), (817, 25848), (1032, 20463), (1077, 19608), (1368, 15437), (1436, 14706), (1548, 13642), (1634, 12924), (2154, 9804), (2451, 8616), (2872, 7353), (3096, 6821), (3231, 6536), (3268, 6462), (4308, 4902)]