21969885

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 41565312

約数和(自身を除く): 19595427

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 71, 105, 147, 213, 245, 355, 421, 497, 735, 1065, 1263, 1491, 2105, 2485, 2947, 3479, 6315, 7455, 8841, 10437, 14735, 17395, 20629, 29891, 44205, 52185, 61887, 89673, 103145, 149455, 209237, 309435, 448365, 627711, 1046185, 1464659, 3138555, 4393977, 7323295, 21969885]

約数ペア:

[(1, 21969885), (3, 7323295), (5, 4393977), (7, 3138555), (15, 1464659), (21, 1046185), (35, 627711), (49, 448365), (71, 309435), (105, 209237), (147, 149455), (213, 103145), (245, 89673), (355, 61887), (421, 52185), (497, 44205), (735, 29891), (1065, 20629), (1263, 17395), (1491, 14735), (2105, 10437), (2485, 8841), (2947, 7455), (3479, 6315)]