21512816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1753}}^1$

素因数の和:1833

約数の個数: 40

約数和(自身を含む): 45674160

約数和(自身を除く): 24161344

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 59, 104, 118, 208, 236, 472, 767, 944, 1534, 1753, 3068, 3506, 6136, 7012, 12272, 14024, 22789, 28048, 45578, 91156, 103427, 182312, 206854, 364624, 413708, 827416, 1344551, 1654832, 2689102, 5378204, 10756408, 21512816]

約数ペア:

[(1, 21512816), (2, 10756408), (4, 5378204), (8, 2689102), (13, 1654832), (16, 1344551), (26, 827416), (52, 413708), (59, 364624), (104, 206854), (118, 182312), (208, 103427), (236, 91156), (472, 45578), (767, 28048), (944, 22789), (1534, 14024), (1753, 12272), (3068, 7012), (3506, 6136)]