81211571

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{853}}^1$

素因数の和:963

約数の個数: 24

約数和(自身を含む): 99303120

約数和(自身を除く): 18091549

約数列:

[1, 7, 29, 49, 67, 203, 469, 853, 1421, 1943, 3283, 5971, 13601, 24737, 41797, 57151, 95207, 173159, 400057, 1212113, 1657379, 2800399, 11601653, 81211571]

約数ペア:

[(1, 81211571), (7, 11601653), (29, 2800399), (49, 1657379), (67, 1212113), (203, 400057), (469, 173159), (853, 95207), (1421, 57151), (1943, 41797), (3283, 24737), (5971, 13601)]