20258978

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{659}}^1\times {\mathrm{809}}^1$

素因数の和:1489

約数の個数: 16

約数和(自身を含む): 32076000

約数和(自身を除く): 11817022

約数列:

[1, 2, 19, 38, 659, 809, 1318, 1618, 12521, 15371, 25042, 30742, 533131, 1066262, 10129489, 20258978]

約数ペア:

[(1, 20258978), (2, 10129489), (19, 1066262), (38, 533131), (659, 30742), (809, 25042), (1318, 15371), (1618, 12521)]