21616245

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{421}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 43185792

約数和(自身を除く): 21569547

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 163, 315, 421, 489, 815, 1141, 1263, 1467, 2105, 2445, 2947, 3423, 3789, 5705, 6315, 7335, 8841, 10269, 14735, 17115, 18945, 26523, 44205, 51345, 68623, 132615, 205869, 343115, 480361, 617607, 1029345, 1441083, 2401805, 3088035, 4323249, 7205415, 21616245]

約数ペア:

[(1, 21616245), (3, 7205415), (5, 4323249), (7, 3088035), (9, 2401805), (15, 1441083), (21, 1029345), (35, 617607), (45, 480361), (63, 343115), (105, 205869), (163, 132615), (315, 68623), (421, 51345), (489, 44205), (815, 26523), (1141, 18945), (1263, 17115), (1467, 14735), (2105, 10269), (2445, 8841), (2947, 7335), (3423, 6315), (3789, 5705)]