78065920

素因数分解:

$2^8\times 5^1\times {\mathrm{71}}^1\times {\mathrm{859}}^1$

素因数の和:951

約数の個数: 72

約数和(自身を含む): 189846720

約数和(自身を除く): 111780800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 256, 284, 320, 355, 568, 640, 710, 859, 1136, 1280, 1420, 1718, 2272, 2840, 3436, 4295, 4544, 5680, 6872, 8590, 9088, 11360, 13744, 17180, 18176, 22720, 27488, 34360, 45440, 54976, 60989, 68720, 90880, 109952, 121978, 137440, 219904, 243956, 274880, 304945, 487912, 549760, 609890, 975824, 1099520, 1219780, 1951648, 2439560, 3903296, 4879120, 7806592, 9758240, 15613184, 19516480, 39032960, 78065920]

約数ペア:

[(1, 78065920), (2, 39032960), (4, 19516480), (5, 15613184), (8, 9758240), (10, 7806592), (16, 4879120), (20, 3903296), (32, 2439560), (40, 1951648), (64, 1219780), (71, 1099520), (80, 975824), (128, 609890), (142, 549760), (160, 487912), (256, 304945), (284, 274880), (320, 243956), (355, 219904), (568, 137440), (640, 121978), (710, 109952), (859, 90880), (1136, 68720), (1280, 60989), (1420, 54976), (1718, 45440), (2272, 34360), (2840, 27488), (3436, 22720), (4295, 18176), (4544, 17180), (5680, 13744), (6872, 11360), (8590, 9088)]