21089187

素因数分解:

$3^3\times 7^1\times {\mathrm{241}}^1\times {\mathrm{463}}^1$

素因数の和:720

約数の個数: 32

約数和(自身を含む): 35932160

約数和(自身を除く): 14842973

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 241, 463, 723, 1389, 1687, 2169, 3241, 4167, 5061, 6507, 9723, 12501, 15183, 29169, 45549, 87507, 111583, 334749, 781081, 1004247, 2343243, 3012741, 7029729, 21089187]

約数ペア:

[(1, 21089187), (3, 7029729), (7, 3012741), (9, 2343243), (21, 1004247), (27, 781081), (63, 334749), (189, 111583), (241, 87507), (463, 45549), (723, 29169), (1389, 15183), (1687, 12501), (2169, 9723), (3241, 6507), (4167, 5061)]