19966000

素因数分解:

$2^4\times 5^3\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 80

約数和(自身を含む): 49327200

約数和(自身を除く): 29361200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 67, 80, 100, 125, 134, 149, 200, 250, 268, 298, 335, 400, 500, 536, 596, 670, 745, 1000, 1072, 1192, 1340, 1490, 1675, 2000, 2384, 2680, 2980, 3350, 3725, 5360, 5960, 6700, 7450, 8375, 9983, 11920, 13400, 14900, 16750, 18625, 19966, 26800, 29800, 33500, 37250, 39932, 49915, 59600, 67000, 74500, 79864, 99830, 134000, 149000, 159728, 199660, 249575, 298000, 399320, 499150, 798640, 998300, 1247875, 1996600, 2495750, 3993200, 4991500, 9983000, 19966000]

約数ペア:

[(1, 19966000), (2, 9983000), (4, 4991500), (5, 3993200), (8, 2495750), (10, 1996600), (16, 1247875), (20, 998300), (25, 798640), (40, 499150), (50, 399320), (67, 298000), (80, 249575), (100, 199660), (125, 159728), (134, 149000), (149, 134000), (200, 99830), (250, 79864), (268, 74500), (298, 67000), (335, 59600), (400, 49915), (500, 39932), (536, 37250), (596, 33500), (670, 29800), (745, 26800), (1000, 19966), (1072, 18625), (1192, 16750), (1340, 14900), (1490, 13400), (1675, 11920), (2000, 9983), (2384, 8375), (2680, 7450), (2980, 6700), (3350, 5960), (3725, 5360)]