19906720

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1499}}^1$

素因数の和:1597

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 27721280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1499, 1660, 2656, 2998, 3320, 5996, 6640, 7495, 11992, 13280, 14990, 23984, 29980, 47968, 59960, 119920, 124417, 239840, 248834, 497668, 622085, 995336, 1244170, 1990672, 2488340, 3981344, 4976680, 9953360, 19906720]

約数ペア:

[(1, 19906720), (2, 9953360), (4, 4976680), (5, 3981344), (8, 2488340), (10, 1990672), (16, 1244170), (20, 995336), (32, 622085), (40, 497668), (80, 248834), (83, 239840), (160, 124417), (166, 119920), (332, 59960), (415, 47968), (664, 29980), (830, 23984), (1328, 14990), (1499, 13280), (1660, 11992), (2656, 7495), (2998, 6640), (3320, 5996)]