20165705

素因数分解:

$5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1553}}^1$

素因数の和:1625

約数の個数: 24

約数和(自身を含む): 28699272

約数和(自身を除く): 8533567

約数列:

[1, 5, 7, 35, 49, 53, 245, 265, 371, 1553, 1855, 2597, 7765, 10871, 12985, 54355, 76097, 82309, 380485, 411545, 576163, 2880815, 4033141, 20165705]

約数ペア:

[(1, 20165705), (5, 4033141), (7, 2880815), (35, 576163), (49, 411545), (53, 380485), (245, 82309), (265, 76097), (371, 54355), (1553, 12985), (1855, 10871), (2597, 7765)]