28100115

素因数分解:

$3^4\times 5^1\times {\mathrm{69383}}^1$

素因数の和:69400

約数の個数: 20

約数和(自身を含む): 50372784

約数和(自身を除く): 22272669

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 69383, 208149, 346915, 624447, 1040745, 1873341, 3122235, 5620023, 9366705, 28100115]

約数ペア:

[(1, 28100115), (3, 9366705), (5, 5620023), (9, 3122235), (15, 1873341), (27, 1040745), (45, 624447), (81, 346915), (135, 208149), (405, 69383)]