21698985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18787}}^1$

素因数の和:18813

約数の個数: 32

約数和(自身を含む): 43287552

約数和(自身を除く): 21588567

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18787, 56361, 93935, 131509, 206657, 281805, 394527, 619971, 657545, 1033285, 1446599, 1972635, 3099855, 4339797, 7232995, 21698985]

約数ペア:

[(1, 21698985), (3, 7232995), (5, 4339797), (7, 3099855), (11, 1972635), (15, 1446599), (21, 1033285), (33, 657545), (35, 619971), (55, 394527), (77, 281805), (105, 206657), (165, 131509), (231, 93935), (385, 56361), (1155, 18787)]