78920320

素因数分解:

$2^7\times 5^1\times {\mathrm{317}}^1\times {\mathrm{389}}^1$

素因数の和:725

約数の個数: 64

約数和(自身を含む): 189750600

約数和(自身を除く): 110830280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 317, 320, 389, 634, 640, 778, 1268, 1556, 1585, 1945, 2536, 3112, 3170, 3890, 5072, 6224, 6340, 7780, 10144, 12448, 12680, 15560, 20288, 24896, 25360, 31120, 40576, 49792, 50720, 62240, 101440, 123313, 124480, 202880, 246626, 248960, 493252, 616565, 986504, 1233130, 1973008, 2466260, 3946016, 4932520, 7892032, 9865040, 15784064, 19730080, 39460160, 78920320]

約数ペア:

[(1, 78920320), (2, 39460160), (4, 19730080), (5, 15784064), (8, 9865040), (10, 7892032), (16, 4932520), (20, 3946016), (32, 2466260), (40, 1973008), (64, 1233130), (80, 986504), (128, 616565), (160, 493252), (317, 248960), (320, 246626), (389, 202880), (634, 124480), (640, 123313), (778, 101440), (1268, 62240), (1556, 50720), (1585, 49792), (1945, 40576), (2536, 31120), (3112, 25360), (3170, 24896), (3890, 20288), (5072, 15560), (6224, 12680), (6340, 12448), (7780, 10144)]