21081753

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1049}}^1$

素因数の和:1102

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 18230247

約数列:

[1, 3, 7, 9, 11, 21, 29, 33, 63, 77, 87, 99, 203, 231, 261, 319, 609, 693, 957, 1049, 1827, 2233, 2871, 3147, 6699, 7343, 9441, 11539, 20097, 22029, 30421, 34617, 66087, 80773, 91263, 103851, 212947, 242319, 273789, 334631, 638841, 726957, 1003893, 1916523, 2342417, 3011679, 7027251, 21081753]

約数ペア:

[(1, 21081753), (3, 7027251), (7, 3011679), (9, 2342417), (11, 1916523), (21, 1003893), (29, 726957), (33, 638841), (63, 334631), (77, 273789), (87, 242319), (99, 212947), (203, 103851), (231, 91263), (261, 80773), (319, 66087), (609, 34617), (693, 30421), (957, 22029), (1049, 20097), (1827, 11539), (2233, 9441), (2871, 7343), (3147, 6699)]