21893529

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1483}}^1$

素因数の和:1549

約数の個数: 32

約数和(自身を含む): 36090880

約数和(自身を除く): 14197351

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1483, 2109, 4449, 4921, 10381, 14763, 28177, 31143, 54871, 84531, 164613, 197239, 384097, 591717, 1042549, 1152291, 3127647, 7297843, 21893529]

約数ペア:

[(1, 21893529), (3, 7297843), (7, 3127647), (19, 1152291), (21, 1042549), (37, 591717), (57, 384097), (111, 197239), (133, 164613), (259, 84531), (399, 54871), (703, 31143), (777, 28177), (1483, 14763), (2109, 10381), (4449, 4921)]