20886438

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:381

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 27013722

約数列:

[1, 2, 3, 6, 17, 23, 29, 34, 46, 51, 58, 69, 87, 102, 138, 174, 307, 391, 493, 614, 667, 782, 921, 986, 1173, 1334, 1479, 1842, 2001, 2346, 2958, 4002, 5219, 7061, 8903, 10438, 11339, 14122, 15657, 17806, 21183, 22678, 26709, 31314, 34017, 42366, 53418, 68034, 120037, 151351, 204769, 240074, 302702, 360111, 409538, 454053, 614307, 720222, 908106, 1228614, 3481073, 6962146, 10443219, 20886438]

約数ペア:

[(1, 20886438), (2, 10443219), (3, 6962146), (6, 3481073), (17, 1228614), (23, 908106), (29, 720222), (34, 614307), (46, 454053), (51, 409538), (58, 360111), (69, 302702), (87, 240074), (102, 204769), (138, 151351), (174, 120037), (307, 68034), (391, 53418), (493, 42366), (614, 34017), (667, 31314), (782, 26709), (921, 22678), (986, 21183), (1173, 17806), (1334, 15657), (1479, 14122), (1842, 11339), (2001, 10438), (2346, 8903), (2958, 7061), (4002, 5219)]