19885671

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{487}}^1$

素因数の和:855

約数の個数: 24

約数和(自身を含む): 31085600

約数和(自身を除く): 11199929

約数列:

[1, 3, 9, 13, 39, 117, 349, 487, 1047, 1461, 3141, 4383, 4537, 6331, 13611, 18993, 40833, 56979, 169963, 509889, 1529667, 2209519, 6628557, 19885671]

約数ペア:

[(1, 19885671), (3, 6628557), (9, 2209519), (13, 1529667), (39, 509889), (117, 169963), (349, 56979), (487, 40833), (1047, 18993), (1461, 13611), (3141, 6331), (4383, 4537)]