20662775

素因数分解:

$5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1663}}^1$

素因数の和:1751

約数の個数: 24

約数和(自身を含む): 29712384

約数和(自身を除く): 9049609

約数列:

[1, 5, 7, 25, 35, 71, 175, 355, 497, 1663, 1775, 2485, 8315, 11641, 12425, 41575, 58205, 118073, 291025, 590365, 826511, 2951825, 4132555, 20662775]

約数ペア:

[(1, 20662775), (5, 4132555), (7, 2951825), (25, 826511), (35, 590365), (71, 291025), (175, 118073), (355, 58205), (497, 41575), (1663, 12425), (1775, 11641), (2485, 8315)]