20713156940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1872799}}^1$

素因数の和:1872894

約数の個数: 48

約数和(自身を含む): 50340864000

約数和(自身を除く): 29627707060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 2212, 2765, 5530, 11060, 1872799, 3745598, 7491196, 9363995, 13109593, 18727990, 26219186, 37455980, 52438372, 65547965, 131095930, 147951121, 262191860, 295902242, 591804484, 739755605, 1035657847, 1479511210, 2071315694, 2959022420, 4142631388, 5178289235, 10356578470, 20713156940]

約数ペア:

[(1, 20713156940), (2, 10356578470), (4, 5178289235), (5, 4142631388), (7, 2959022420), (10, 2071315694), (14, 1479511210), (20, 1035657847), (28, 739755605), (35, 591804484), (70, 295902242), (79, 262191860), (140, 147951121), (158, 131095930), (316, 65547965), (395, 52438372), (553, 37455980), (790, 26219186), (1106, 18727990), (1580, 13109593), (2212, 9363995), (2765, 7491196), (5530, 3745598), (11060, 1872799)]