12780005

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{457}}^1$

素因数の和:533

約数の個数: 32

約数和(自身を含む): 18994176

約数和(自身を除く): 6214171

約数列:

[1, 5, 7, 17, 35, 47, 85, 119, 235, 329, 457, 595, 799, 1645, 2285, 3199, 3995, 5593, 7769, 15995, 21479, 27965, 38845, 54383, 107395, 150353, 271915, 365143, 751765, 1825715, 2556001, 12780005]

約数ペア:

[(1, 12780005), (5, 2556001), (7, 1825715), (17, 751765), (35, 365143), (47, 271915), (85, 150353), (119, 107395), (235, 54383), (329, 38845), (457, 27965), (595, 21479), (799, 15995), (1645, 7769), (2285, 5593), (3199, 3995)]