388714880

素因数分解:

$2^7\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1237}}^1$

素因数の和:1747

約数の個数: 64

約数和(自身を含む): 931916880

約数和(自身を除く): 543202000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 491, 640, 982, 1237, 1964, 2455, 2474, 3928, 4910, 4948, 6185, 7856, 9820, 9896, 12370, 15712, 19640, 19792, 24740, 31424, 39280, 39584, 49480, 62848, 78560, 79168, 98960, 157120, 158336, 197920, 314240, 395840, 607367, 791680, 1214734, 2429468, 3036835, 4858936, 6073670, 9717872, 12147340, 19435744, 24294680, 38871488, 48589360, 77742976, 97178720, 194357440, 388714880]

約数ペア:

[(1, 388714880), (2, 194357440), (4, 97178720), (5, 77742976), (8, 48589360), (10, 38871488), (16, 24294680), (20, 19435744), (32, 12147340), (40, 9717872), (64, 6073670), (80, 4858936), (128, 3036835), (160, 2429468), (320, 1214734), (491, 791680), (640, 607367), (982, 395840), (1237, 314240), (1964, 197920), (2455, 158336), (2474, 157120), (3928, 98960), (4910, 79168), (4948, 78560), (6185, 62848), (7856, 49480), (9820, 39584), (9896, 39280), (12370, 31424), (15712, 24740), (19640, 19792)]