2721775

素因数分解:

$5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1$

素因数の和:271

約数の個数: 24

約数和(自身を含む): 3920384

約数和(自身を除く): 1198609

約数列:

[1, 5, 7, 25, 35, 103, 151, 175, 515, 721, 755, 1057, 2575, 3605, 3775, 5285, 15553, 18025, 26425, 77765, 108871, 388825, 544355, 2721775]

約数ペア:

[(1, 2721775), (5, 544355), (7, 388825), (25, 108871), (35, 77765), (103, 26425), (151, 18025), (175, 15553), (515, 5285), (721, 3775), (755, 3605), (1057, 2575)]