21879445

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 31288320

約数和(自身を除く): 9408875

約数列:

[1, 5, 7, 35, 41, 79, 193, 205, 287, 395, 553, 965, 1351, 1435, 2765, 3239, 6755, 7913, 15247, 16195, 22673, 39565, 55391, 76235, 106729, 113365, 276955, 533645, 625127, 3125635, 4375889, 21879445]

約数ペア:

[(1, 21879445), (5, 4375889), (7, 3125635), (35, 625127), (41, 533645), (79, 276955), (193, 113365), (205, 106729), (287, 76235), (395, 55391), (553, 39565), (965, 22673), (1351, 16195), (1435, 15247), (2765, 7913), (3239, 6755)]