1997485

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:313

約数の個数: 24

約数和(自身を含む): 2889216

約数和(自身を除く): 891731

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 263, 1085, 1315, 1519, 1841, 7595, 8153, 9205, 12887, 40765, 57071, 64435, 285355, 399497, 1997485]

約数ペア:

[(1, 1997485), (5, 399497), (7, 285355), (31, 64435), (35, 57071), (49, 40765), (155, 12887), (217, 9205), (245, 8153), (263, 7595), (1085, 1841), (1315, 1519)]