21526533

素因数分解:

$3^3\times 7^2\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:383

約数の個数: 48

約数和(自身を含む): 37920960

約数和(自身を除く): 16394427

約数列:

[1, 3, 7, 9, 21, 27, 49, 53, 63, 147, 159, 189, 307, 371, 441, 477, 921, 1113, 1323, 1431, 2149, 2597, 2763, 3339, 6447, 7791, 8289, 10017, 15043, 16271, 19341, 23373, 45129, 48813, 58023, 70119, 113897, 135387, 146439, 341691, 406161, 439317, 797279, 1025073, 2391837, 3075219, 7175511, 21526533]

約数ペア:

[(1, 21526533), (3, 7175511), (7, 3075219), (9, 2391837), (21, 1025073), (27, 797279), (49, 439317), (53, 406161), (63, 341691), (147, 146439), (159, 135387), (189, 113897), (307, 70119), (371, 58023), (441, 48813), (477, 45129), (921, 23373), (1113, 19341), (1323, 16271), (1431, 15043), (2149, 10017), (2597, 8289), (2763, 7791), (3339, 6447)]