12978862

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:137

約数の個数: 48

約数和(自身を含む): 23189760

約数和(自身を除く): 10210898

約数列:

[1, 2, 13, 19, 26, 38, 43, 47, 86, 94, 169, 247, 338, 494, 559, 611, 817, 893, 1118, 1222, 1634, 1786, 2021, 3211, 4042, 6422, 7267, 7943, 10621, 11609, 14534, 15886, 21242, 23218, 26273, 38399, 52546, 76798, 138073, 150917, 276146, 301834, 341549, 499187, 683098, 998374, 6489431, 12978862]

約数ペア:

[(1, 12978862), (2, 6489431), (13, 998374), (19, 683098), (26, 499187), (38, 341549), (43, 301834), (47, 276146), (86, 150917), (94, 138073), (169, 76798), (247, 52546), (338, 38399), (494, 26273), (559, 23218), (611, 21242), (817, 15886), (893, 14534), (1118, 11609), (1222, 10621), (1634, 7943), (1786, 7267), (2021, 6422), (3211, 4042)]