21899900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{463}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 53163264

約数和(自身を除く): 31263364

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 43, 44, 50, 55, 86, 100, 110, 172, 215, 220, 275, 430, 463, 473, 550, 860, 926, 946, 1075, 1100, 1852, 1892, 2150, 2315, 2365, 4300, 4630, 4730, 5093, 9260, 9460, 10186, 11575, 11825, 19909, 20372, 23150, 23650, 25465, 39818, 46300, 47300, 50930, 79636, 99545, 101860, 127325, 199090, 218999, 254650, 398180, 437998, 497725, 509300, 875996, 995450, 1094995, 1990900, 2189990, 4379980, 5474975, 10949950, 21899900]

約数ペア:

[(1, 21899900), (2, 10949950), (4, 5474975), (5, 4379980), (10, 2189990), (11, 1990900), (20, 1094995), (22, 995450), (25, 875996), (43, 509300), (44, 497725), (50, 437998), (55, 398180), (86, 254650), (100, 218999), (110, 199090), (172, 127325), (215, 101860), (220, 99545), (275, 79636), (430, 50930), (463, 47300), (473, 46300), (550, 39818), (860, 25465), (926, 23650), (946, 23150), (1075, 20372), (1100, 19909), (1852, 11825), (1892, 11575), (2150, 10186), (2315, 9460), (2365, 9260), (4300, 5093), (4630, 4730)]