20889435

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{293}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 39414816

約数和(自身を除く): 18525381

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 97, 105, 147, 245, 291, 293, 485, 679, 735, 879, 1455, 1465, 2037, 2051, 3395, 4395, 4753, 6153, 10185, 10255, 14259, 14357, 23765, 28421, 30765, 43071, 71295, 71785, 85263, 142105, 198947, 215355, 426315, 596841, 994735, 1392629, 2984205, 4177887, 6963145, 20889435]

約数ペア:

[(1, 20889435), (3, 6963145), (5, 4177887), (7, 2984205), (15, 1392629), (21, 994735), (35, 596841), (49, 426315), (97, 215355), (105, 198947), (147, 142105), (245, 85263), (291, 71785), (293, 71295), (485, 43071), (679, 30765), (735, 28421), (879, 23765), (1455, 14357), (1465, 14259), (2037, 10255), (2051, 10185), (3395, 6153), (4395, 4753)]