20606705

素因数分解:

$5^1\times 7^2\times {\mathrm{241}}^1\times {\mathrm{349}}^1$

素因数の和:609

約数の個数: 24

約数和(自身を含む): 28967400

約数和(自身を除く): 8360695

約数列:

[1, 5, 7, 35, 49, 241, 245, 349, 1205, 1687, 1745, 2443, 8435, 11809, 12215, 17101, 59045, 84109, 85505, 420545, 588763, 2943815, 4121341, 20606705]

約数ペア:

[(1, 20606705), (5, 4121341), (7, 2943815), (35, 588763), (49, 420545), (241, 85505), (245, 84109), (349, 59045), (1205, 17101), (1687, 12215), (1745, 11809), (2443, 8435)]