21036495

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{563}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 35085312

約数和(自身を除く): 14048817

約数列:

[1, 3, 5, 15, 47, 53, 141, 159, 235, 265, 563, 705, 795, 1689, 2491, 2815, 7473, 8445, 12455, 26461, 29839, 37365, 79383, 89517, 132305, 149195, 396915, 447585, 1402433, 4207299, 7012165, 21036495]

約数ペア:

[(1, 21036495), (3, 7012165), (5, 4207299), (15, 1402433), (47, 447585), (53, 396915), (141, 149195), (159, 132305), (235, 89517), (265, 79383), (563, 37365), (705, 29839), (795, 26461), (1689, 12455), (2491, 8445), (2815, 7473)]