28761775

素因数分解:

$5^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{443}}^1$

素因数の和:520

約数の個数: 36

約数和(自身を含む): 42365592

約数和(自身を除く): 13603817

約数列:

[1, 5, 7, 25, 35, 49, 53, 175, 245, 265, 371, 443, 1225, 1325, 1855, 2215, 2597, 3101, 9275, 11075, 12985, 15505, 21707, 23479, 64925, 77525, 108535, 117395, 164353, 542675, 586975, 821765, 1150471, 4108825, 5752355, 28761775]

約数ペア:

[(1, 28761775), (5, 5752355), (7, 4108825), (25, 1150471), (35, 821765), (49, 586975), (53, 542675), (175, 164353), (245, 117395), (265, 108535), (371, 77525), (443, 64925), (1225, 23479), (1325, 21707), (1855, 15505), (2215, 12985), (2597, 11075), (3101, 9275)]