21816216

素因数分解:

$2^3\times 3^4\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:406

約数の個数: 80

約数和(自身を含む): 61811640

約数和(自身を除く): 39995424

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 131, 162, 216, 257, 262, 324, 393, 514, 524, 648, 771, 786, 1028, 1048, 1179, 1542, 1572, 2056, 2313, 2358, 3084, 3144, 3537, 4626, 4716, 6168, 6939, 7074, 9252, 9432, 10611, 13878, 14148, 18504, 20817, 21222, 27756, 28296, 33667, 41634, 42444, 55512, 67334, 83268, 84888, 101001, 134668, 166536, 202002, 269336, 303003, 404004, 606006, 808008, 909009, 1212012, 1818018, 2424024, 2727027, 3636036, 5454054, 7272072, 10908108, 21816216]

約数ペア:

[(1, 21816216), (2, 10908108), (3, 7272072), (4, 5454054), (6, 3636036), (8, 2727027), (9, 2424024), (12, 1818018), (18, 1212012), (24, 909009), (27, 808008), (36, 606006), (54, 404004), (72, 303003), (81, 269336), (108, 202002), (131, 166536), (162, 134668), (216, 101001), (257, 84888), (262, 83268), (324, 67334), (393, 55512), (514, 42444), (524, 41634), (648, 33667), (771, 28296), (786, 27756), (1028, 21222), (1048, 20817), (1179, 18504), (1542, 14148), (1572, 13878), (2056, 10611), (2313, 9432), (2358, 9252), (3084, 7074), (3144, 6939), (3537, 6168), (4626, 4716)]