21140808

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67759}}^1$

素因数の和:67781

約数の個数: 32

約数和(自身を含む): 56918400

約数和(自身を除く): 35777592

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 67759, 135518, 203277, 271036, 406554, 542072, 813108, 880867, 1626216, 1761734, 2642601, 3523468, 5285202, 7046936, 10570404, 21140808]

約数ペア:

[(1, 21140808), (2, 10570404), (3, 7046936), (4, 5285202), (6, 3523468), (8, 2642601), (12, 1761734), (13, 1626216), (24, 880867), (26, 813108), (39, 542072), (52, 406554), (78, 271036), (104, 203277), (156, 135518), (312, 67759)]