19985316

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{128111}}^1$

素因数の和:128131

約数の個数: 24

約数和(自身を含む): 50219904

約数和(自身を除く): 30234588

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 128111, 256222, 384333, 512444, 768666, 1537332, 1665443, 3330886, 4996329, 6661772, 9992658, 19985316]

約数ペア:

[(1, 19985316), (2, 9992658), (3, 6661772), (4, 4996329), (6, 3330886), (12, 1665443), (13, 1537332), (26, 768666), (39, 512444), (52, 384333), (78, 256222), (156, 128111)]