21052395

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 46230912

約数和(自身を除く): 25178517

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 53, 63, 65, 91, 97, 105, 117, 159, 195, 265, 273, 291, 315, 371, 455, 477, 485, 585, 679, 689, 795, 819, 873, 1113, 1261, 1365, 1455, 1855, 2037, 2067, 2385, 3339, 3395, 3445, 3783, 4095, 4365, 4823, 5141, 5565, 6111, 6201, 6305, 8827, 10185, 10335, 11349, 14469, 15423, 16695, 18915, 24115, 25705, 26481, 30555, 31005, 35987, 43407, 44135, 46269, 56745, 66833, 72345, 77115, 79443, 107961, 132405, 179935, 200499, 217035, 231345, 323883, 334165, 397215, 467831, 539805, 601497, 1002495, 1403493, 1619415, 2339155, 3007485, 4210479, 7017465, 21052395]

約数ペア:

[(1, 21052395), (3, 7017465), (5, 4210479), (7, 3007485), (9, 2339155), (13, 1619415), (15, 1403493), (21, 1002495), (35, 601497), (39, 539805), (45, 467831), (53, 397215), (63, 334165), (65, 323883), (91, 231345), (97, 217035), (105, 200499), (117, 179935), (159, 132405), (195, 107961), (265, 79443), (273, 77115), (291, 72345), (315, 66833), (371, 56745), (455, 46269), (477, 44135), (485, 43407), (585, 35987), (679, 31005), (689, 30555), (795, 26481), (819, 25705), (873, 24115), (1113, 18915), (1261, 16695), (1365, 15423), (1455, 14469), (1855, 11349), (2037, 10335), (2067, 10185), (2385, 8827), (3339, 6305), (3395, 6201), (3445, 6111), (3783, 5565), (4095, 5141), (4365, 4823)]