20956335

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{139}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 37161600

約数和(自身を除く): 16205265

約数列:

[1, 3, 5, 15, 19, 23, 57, 69, 95, 115, 139, 285, 345, 417, 437, 529, 695, 1311, 1587, 2085, 2185, 2641, 2645, 3197, 6555, 7923, 7935, 9591, 10051, 13205, 15985, 30153, 39615, 47955, 50255, 60743, 73531, 150765, 182229, 220593, 303715, 367655, 911145, 1102965, 1397089, 4191267, 6985445, 20956335]

約数ペア:

[(1, 20956335), (3, 6985445), (5, 4191267), (15, 1397089), (19, 1102965), (23, 911145), (57, 367655), (69, 303715), (95, 220593), (115, 182229), (139, 150765), (285, 73531), (345, 60743), (417, 50255), (437, 47955), (529, 39615), (695, 30153), (1311, 15985), (1587, 13205), (2085, 10051), (2185, 9591), (2641, 7935), (2645, 7923), (3197, 6555)]