21630778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43787}}^1$

素因数の和:43821

約数の個数: 16

約数和(自身を含む): 36781920

約数和(自身を除く): 15151142

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 43787, 87574, 569231, 831953, 1138462, 1663906, 10815389, 21630778]

約数ペア:

[(1, 21630778), (2, 10815389), (13, 1663906), (19, 1138462), (26, 831953), (38, 569231), (247, 87574), (494, 43787)]