20657065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{173}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 29465856

約数和(自身を除く): 8808791

約数列:

[1, 5, 11, 13, 55, 65, 143, 167, 173, 715, 835, 865, 1837, 1903, 2171, 2249, 9185, 9515, 10855, 11245, 23881, 24739, 28891, 119405, 123695, 144455, 317801, 375583, 1589005, 1877915, 4131413, 20657065]

約数ペア:

[(1, 20657065), (5, 4131413), (11, 1877915), (13, 1589005), (55, 375583), (65, 317801), (143, 144455), (167, 123695), (173, 119405), (715, 28891), (835, 24739), (865, 23881), (1837, 11245), (1903, 10855), (2171, 9515), (2249, 9185)]