19903725

素因数分解:

$3^4\times 5^2\times {\mathrm{9829}}^1$

素因数の和:9851

約数の個数: 30

約数和(自身を含む): 36872330

約数和(自身を除く): 16968605

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 9829, 29487, 49145, 88461, 147435, 245725, 265383, 442305, 737175, 796149, 1326915, 2211525, 3980745, 6634575, 19903725]

約数ペア:

[(1, 19903725), (3, 6634575), (5, 3980745), (9, 2211525), (15, 1326915), (25, 796149), (27, 737175), (45, 442305), (75, 265383), (81, 245725), (135, 147435), (225, 88461), (405, 49145), (675, 29487), (2025, 9829)]