28897015

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1493}}^1$

素因数の和:1591

約数の個数: 24

約数和(自身を含む): 40875840

約数和(自身を除く): 11978825

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 1493, 2765, 3871, 7465, 10451, 19355, 52255, 73157, 117947, 365785, 589735, 825629, 4128145, 5779403, 28897015]

約数ペア:

[(1, 28897015), (5, 5779403), (7, 4128145), (35, 825629), (49, 589735), (79, 365785), (245, 117947), (395, 73157), (553, 52255), (1493, 19355), (2765, 10451), (3871, 7465)]