20698605

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{311}}^1$

素因数の和:371

約数の個数: 64

約数和(自身を含む): 40435200

約数和(自身を除く): 19736595

約数列:

[1, 3, 5, 9, 15, 17, 27, 29, 45, 51, 85, 87, 135, 145, 153, 255, 261, 311, 435, 459, 493, 765, 783, 933, 1305, 1479, 1555, 2295, 2465, 2799, 3915, 4437, 4665, 5287, 7395, 8397, 9019, 13311, 13995, 15861, 22185, 26435, 27057, 41985, 45095, 47583, 66555, 79305, 81171, 135285, 142749, 153323, 237915, 243513, 405855, 459969, 713745, 766615, 1217565, 1379907, 2299845, 4139721, 6899535, 20698605]

約数ペア:

[(1, 20698605), (3, 6899535), (5, 4139721), (9, 2299845), (15, 1379907), (17, 1217565), (27, 766615), (29, 713745), (45, 459969), (51, 405855), (85, 243513), (87, 237915), (135, 153323), (145, 142749), (153, 135285), (255, 81171), (261, 79305), (311, 66555), (435, 47583), (459, 45095), (493, 41985), (765, 27057), (783, 26435), (933, 22185), (1305, 15861), (1479, 13995), (1555, 13311), (2295, 9019), (2465, 8397), (2799, 7395), (3915, 5287), (4437, 4665)]