215322915

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1\times {\mathrm{1721}}^1$

素因数の和:2187

約数の個数: 32

約数和(自身を含む): 363686400

約数和(自身を除く): 148363485

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 439, 1317, 1721, 2195, 5163, 6585, 8341, 8605, 25023, 25815, 32699, 41705, 98097, 125115, 163495, 490485, 755519, 2266557, 3777595, 11332785, 14354861, 43064583, 71774305, 215322915]

約数ペア:

[(1, 215322915), (3, 71774305), (5, 43064583), (15, 14354861), (19, 11332785), (57, 3777595), (95, 2266557), (285, 755519), (439, 490485), (1317, 163495), (1721, 125115), (2195, 98097), (5163, 41705), (6585, 32699), (8341, 25815), (8605, 25023)]