28715820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{68371}}^1$

素因数の和:68390

約数の個数: 48

約数和(自身を含む): 91891968

約数和(自身を除く): 63176148

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 68371, 136742, 205113, 273484, 341855, 410226, 478597, 683710, 820452, 957194, 1025565, 1367420, 1435791, 1914388, 2051130, 2392985, 2871582, 4102260, 4785970, 5743164, 7178955, 9571940, 14357910, 28715820]

約数ペア:

[(1, 28715820), (2, 14357910), (3, 9571940), (4, 7178955), (5, 5743164), (6, 4785970), (7, 4102260), (10, 2871582), (12, 2392985), (14, 2051130), (15, 1914388), (20, 1435791), (21, 1367420), (28, 1025565), (30, 957194), (35, 820452), (42, 683710), (60, 478597), (70, 410226), (84, 341855), (105, 273484), (140, 205113), (210, 136742), (420, 68371)]