21839475

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2447}}^1$

素因数の和:2484

約数の個数: 48

約数和(自身を含む): 43711488

約数和(自身を除く): 21872013

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 175, 255, 357, 425, 525, 595, 1275, 1785, 2447, 2975, 7341, 8925, 12235, 17129, 36705, 41599, 51387, 61175, 85645, 124797, 183525, 207995, 256935, 291193, 428225, 623985, 873579, 1039975, 1284675, 1455965, 3119925, 4367895, 7279825, 21839475]

約数ペア:

[(1, 21839475), (3, 7279825), (5, 4367895), (7, 3119925), (15, 1455965), (17, 1284675), (21, 1039975), (25, 873579), (35, 623985), (51, 428225), (75, 291193), (85, 256935), (105, 207995), (119, 183525), (175, 124797), (255, 85645), (357, 61175), (425, 51387), (525, 41599), (595, 36705), (1275, 17129), (1785, 12235), (2447, 8925), (2975, 7341)]