19902880

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6547}}^1$

素因数の和:6581

約数の個数: 48

約数和(自身を含む): 49502880

約数和(自身を除く): 29600000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6547, 13094, 26188, 32735, 52376, 65470, 104752, 124393, 130940, 209504, 248786, 261880, 497572, 523760, 621965, 995144, 1047520, 1243930, 1990288, 2487860, 3980576, 4975720, 9951440, 19902880]

約数ペア:

[(1, 19902880), (2, 9951440), (4, 4975720), (5, 3980576), (8, 2487860), (10, 1990288), (16, 1243930), (19, 1047520), (20, 995144), (32, 621965), (38, 523760), (40, 497572), (76, 261880), (80, 248786), (95, 209504), (152, 130940), (160, 124393), (190, 104752), (304, 65470), (380, 52376), (608, 32735), (760, 26188), (1520, 13094), (3040, 6547)]