20997537

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{593}}^1$

素因数の和:673

約数の個数: 32

約数和(自身を含む): 32503680

約数和(自身を除く): 11506143

約数列:

[1, 3, 11, 29, 33, 37, 87, 111, 319, 407, 593, 957, 1073, 1221, 1779, 3219, 6523, 11803, 17197, 19569, 21941, 35409, 51591, 65823, 189167, 241351, 567501, 636289, 724053, 1908867, 6999179, 20997537]

約数ペア:

[(1, 20997537), (3, 6999179), (11, 1908867), (29, 724053), (33, 636289), (37, 567501), (87, 241351), (111, 189167), (319, 65823), (407, 51591), (593, 35409), (957, 21941), (1073, 19569), (1221, 17197), (1779, 11803), (3219, 6523)]