21091668

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2551}}^1$

素因数の和:2624

約数の個数: 48

約数和(自身を含む): 54020736

約数和(自身を除く): 32929068

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 53, 78, 106, 156, 159, 212, 318, 636, 689, 1378, 2067, 2551, 2756, 4134, 5102, 7653, 8268, 10204, 15306, 30612, 33163, 66326, 99489, 132652, 135203, 198978, 270406, 397956, 405609, 540812, 811218, 1622436, 1757639, 3515278, 5272917, 7030556, 10545834, 21091668]

約数ペア:

[(1, 21091668), (2, 10545834), (3, 7030556), (4, 5272917), (6, 3515278), (12, 1757639), (13, 1622436), (26, 811218), (39, 540812), (52, 405609), (53, 397956), (78, 270406), (106, 198978), (156, 135203), (159, 132652), (212, 99489), (318, 66326), (636, 33163), (689, 30612), (1378, 15306), (2067, 10204), (2551, 8268), (2756, 7653), (4134, 5102)]