20557316

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20807}}^1$

素因数の和:20843

約数の個数: 24

約数和(自身を含む): 40783680

約数和(自身を除く): 20226364

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 20807, 41614, 83228, 270491, 395333, 540982, 790666, 1081964, 1581332, 5139329, 10278658, 20557316]

約数ペア:

[(1, 20557316), (2, 10278658), (4, 5139329), (13, 1581332), (19, 1081964), (26, 790666), (38, 540982), (52, 395333), (76, 270491), (247, 83228), (494, 41614), (988, 20807)]