19478120

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2447}}^1$

素因数の和:2657

約数の個数: 32

約数和(自身を含む): 44064000

約数和(自身を除く): 24585880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2447, 3980, 4894, 7960, 9788, 12235, 19576, 24470, 48940, 97880, 486953, 973906, 1947812, 2434765, 3895624, 4869530, 9739060, 19478120]

約数ペア:

[(1, 19478120), (2, 9739060), (4, 4869530), (5, 3895624), (8, 2434765), (10, 1947812), (20, 973906), (40, 486953), (199, 97880), (398, 48940), (796, 24470), (995, 19576), (1592, 12235), (1990, 9788), (2447, 7960), (3980, 4894)]