20685872

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1289}}^1$

素因数の和:1373

約数の個数: 40

約数和(自身を含む): 43189200

約数和(自身を除く): 22503328

約数列:

[1, 2, 4, 8, 16, 17, 34, 59, 68, 118, 136, 236, 272, 472, 944, 1003, 1289, 2006, 2578, 4012, 5156, 8024, 10312, 16048, 20624, 21913, 43826, 76051, 87652, 152102, 175304, 304204, 350608, 608408, 1216816, 1292867, 2585734, 5171468, 10342936, 20685872]

約数ペア:

[(1, 20685872), (2, 10342936), (4, 5171468), (8, 2585734), (16, 1292867), (17, 1216816), (34, 608408), (59, 350608), (68, 304204), (118, 175304), (136, 152102), (236, 87652), (272, 76051), (472, 43826), (944, 21913), (1003, 20624), (1289, 16048), (2006, 10312), (2578, 8024), (4012, 5156)]