20894120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1747}}^1$

素因数の和:1794

約数の個数: 64

約数和(自身を含む): 52859520

約数和(自身を除く): 31965400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1747, 2392, 2990, 3494, 5980, 6988, 8735, 11960, 13976, 17470, 22711, 34940, 40181, 45422, 69880, 80362, 90844, 113555, 160724, 181688, 200905, 227110, 321448, 401810, 454220, 522353, 803620, 908440, 1044706, 1607240, 2089412, 2611765, 4178824, 5223530, 10447060, 20894120]

約数ペア:

[(1, 20894120), (2, 10447060), (4, 5223530), (5, 4178824), (8, 2611765), (10, 2089412), (13, 1607240), (20, 1044706), (23, 908440), (26, 803620), (40, 522353), (46, 454220), (52, 401810), (65, 321448), (92, 227110), (104, 200905), (115, 181688), (130, 160724), (184, 113555), (230, 90844), (260, 80362), (299, 69880), (460, 45422), (520, 40181), (598, 34940), (920, 22711), (1196, 17470), (1495, 13976), (1747, 11960), (2392, 8735), (2990, 6988), (3494, 5980)]