21709545

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:410

約数の個数: 64

約数和(自身を含む): 42336000

約数和(自身を除く): 20626455

約数列:

[1, 3, 5, 11, 13, 15, 29, 33, 39, 55, 65, 87, 143, 145, 165, 195, 319, 349, 377, 429, 435, 715, 957, 1047, 1131, 1595, 1745, 1885, 2145, 3839, 4147, 4537, 4785, 5235, 5655, 10121, 11517, 12441, 13611, 19195, 20735, 22685, 30363, 49907, 50605, 57585, 62205, 68055, 111331, 131573, 149721, 151815, 249535, 333993, 394719, 556655, 657865, 748605, 1447303, 1669965, 1973595, 4341909, 7236515, 21709545]

約数ペア:

[(1, 21709545), (3, 7236515), (5, 4341909), (11, 1973595), (13, 1669965), (15, 1447303), (29, 748605), (33, 657865), (39, 556655), (55, 394719), (65, 333993), (87, 249535), (143, 151815), (145, 149721), (165, 131573), (195, 111331), (319, 68055), (349, 62205), (377, 57585), (429, 50605), (435, 49907), (715, 30363), (957, 22685), (1047, 20735), (1131, 19195), (1595, 13611), (1745, 12441), (1885, 11517), (2145, 10121), (3839, 5655), (4147, 5235), (4537, 4785)]