21450858

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1087}}^1$

素因数の和:1139

約数の個数: 64

約数和(自身を含む): 52641792

約数和(自身を除く): 31190934

約数列:

[1, 2, 3, 6, 11, 13, 22, 23, 26, 33, 39, 46, 66, 69, 78, 138, 143, 253, 286, 299, 429, 506, 598, 759, 858, 897, 1087, 1518, 1794, 2174, 3261, 3289, 6522, 6578, 9867, 11957, 14131, 19734, 23914, 25001, 28262, 35871, 42393, 50002, 71742, 75003, 84786, 150006, 155441, 275011, 310882, 325013, 466323, 550022, 650026, 825033, 932646, 975039, 1650066, 1950078, 3575143, 7150286, 10725429, 21450858]

約数ペア:

[(1, 21450858), (2, 10725429), (3, 7150286), (6, 3575143), (11, 1950078), (13, 1650066), (22, 975039), (23, 932646), (26, 825033), (33, 650026), (39, 550022), (46, 466323), (66, 325013), (69, 310882), (78, 275011), (138, 155441), (143, 150006), (253, 84786), (286, 75003), (299, 71742), (429, 50002), (506, 42393), (598, 35871), (759, 28262), (858, 25001), (897, 23914), (1087, 19734), (1518, 14131), (1794, 11957), (2174, 9867), (3261, 6578), (3289, 6522)]