81466775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 116659200

約数和(自身を除く): 35192425

約数列:

[1, 5, 13, 19, 25, 65, 79, 95, 167, 247, 325, 395, 475, 835, 1027, 1235, 1501, 1975, 2171, 3173, 4175, 5135, 6175, 7505, 10855, 13193, 15865, 19513, 25675, 37525, 41249, 54275, 65965, 79325, 97565, 171509, 206245, 250667, 329825, 487825, 857545, 1031225, 1253335, 3258671, 4287725, 6266675, 16293355, 81466775]

約数ペア:

[(1, 81466775), (5, 16293355), (13, 6266675), (19, 4287725), (25, 3258671), (65, 1253335), (79, 1031225), (95, 857545), (167, 487825), (247, 329825), (325, 250667), (395, 206245), (475, 171509), (835, 97565), (1027, 79325), (1235, 65965), (1501, 54275), (1975, 41249), (2171, 37525), (3173, 25675), (4175, 19513), (5135, 15865), (6175, 13193), (7505, 10855)]