138421760

素因数分解:

$2^9\times 5^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:551

約数の個数: 80

約数和(自身を含む): 335134800

約数和(自身を除く): 196713040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 256, 278, 320, 389, 512, 556, 640, 695, 778, 1112, 1280, 1390, 1556, 1945, 2224, 2560, 2780, 3112, 3890, 4448, 5560, 6224, 7780, 8896, 11120, 12448, 15560, 17792, 22240, 24896, 31120, 35584, 44480, 49792, 54071, 62240, 71168, 88960, 99584, 108142, 124480, 177920, 199168, 216284, 248960, 270355, 355840, 432568, 497920, 540710, 865136, 995840, 1081420, 1730272, 2162840, 3460544, 4325680, 6921088, 8651360, 13842176, 17302720, 27684352, 34605440, 69210880, 138421760]

約数ペア:

[(1, 138421760), (2, 69210880), (4, 34605440), (5, 27684352), (8, 17302720), (10, 13842176), (16, 8651360), (20, 6921088), (32, 4325680), (40, 3460544), (64, 2162840), (80, 1730272), (128, 1081420), (139, 995840), (160, 865136), (256, 540710), (278, 497920), (320, 432568), (389, 355840), (512, 270355), (556, 248960), (640, 216284), (695, 199168), (778, 177920), (1112, 124480), (1280, 108142), (1390, 99584), (1556, 88960), (1945, 71168), (2224, 62240), (2560, 54071), (2780, 49792), (3112, 44480), (3890, 35584), (4448, 31120), (5560, 24896), (6224, 22240), (7780, 17792), (8896, 15560), (11120, 12448)]