21256248

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{353}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 57687840

約数和(自身を除く): 36431592

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 193, 312, 353, 386, 579, 706, 772, 1059, 1158, 1412, 1544, 2118, 2316, 2509, 2824, 4236, 4589, 4632, 5018, 7527, 8472, 9178, 10036, 13767, 15054, 18356, 20072, 27534, 30108, 36712, 55068, 60216, 68129, 110136, 136258, 204387, 272516, 408774, 545032, 817548, 885677, 1635096, 1771354, 2657031, 3542708, 5314062, 7085416, 10628124, 21256248]

約数ペア:

[(1, 21256248), (2, 10628124), (3, 7085416), (4, 5314062), (6, 3542708), (8, 2657031), (12, 1771354), (13, 1635096), (24, 885677), (26, 817548), (39, 545032), (52, 408774), (78, 272516), (104, 204387), (156, 136258), (193, 110136), (312, 68129), (353, 60216), (386, 55068), (579, 36712), (706, 30108), (772, 27534), (1059, 20072), (1158, 18356), (1412, 15054), (1544, 13767), (2118, 10036), (2316, 9178), (2509, 8472), (2824, 7527), (4236, 5018), (4589, 4632)]