18997992

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{20297}}^1$

素因数の和:20322

約数の個数: 48

約数和(自身を含む): 55413540

約数和(自身を除く): 36415548

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 20297, 40594, 60891, 81188, 121782, 162376, 182673, 243564, 263861, 365346, 487128, 527722, 730692, 791583, 1055444, 1461384, 1583166, 2110888, 2374749, 3166332, 4749498, 6332664, 9498996, 18997992]

約数ペア:

[(1, 18997992), (2, 9498996), (3, 6332664), (4, 4749498), (6, 3166332), (8, 2374749), (9, 2110888), (12, 1583166), (13, 1461384), (18, 1055444), (24, 791583), (26, 730692), (36, 527722), (39, 487128), (52, 365346), (72, 263861), (78, 243564), (104, 182673), (117, 162376), (156, 121782), (234, 81188), (312, 60891), (468, 40594), (936, 20297)]