28750005

素因数分解:

$3^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1231}}^1$

素因数の和:1418

約数の個数: 32

約数和(自身を含む): 51448320

約数和(自身を除く): 22698315

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 173, 519, 865, 1231, 1557, 2595, 3693, 4671, 6155, 7785, 11079, 18465, 23355, 33237, 55395, 166185, 212963, 638889, 1064815, 1916667, 3194445, 5750001, 9583335, 28750005]

約数ペア:

[(1, 28750005), (3, 9583335), (5, 5750001), (9, 3194445), (15, 1916667), (27, 1064815), (45, 638889), (135, 212963), (173, 166185), (519, 55395), (865, 33237), (1231, 23355), (1557, 18465), (2595, 11079), (3693, 7785), (4671, 6155)]