20728728

素因数分解:

$2^3\times 3^2\times {\mathrm{67}}^1\times {\mathrm{4297}}^1$

素因数の和:4376

約数の個数: 48

約数和(自身を含む): 56991480

約数和(自身を除く): 36262752

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 67, 72, 134, 201, 268, 402, 536, 603, 804, 1206, 1608, 2412, 4297, 4824, 8594, 12891, 17188, 25782, 34376, 38673, 51564, 77346, 103128, 154692, 287899, 309384, 575798, 863697, 1151596, 1727394, 2303192, 2591091, 3454788, 5182182, 6909576, 10364364, 20728728]

約数ペア:

[(1, 20728728), (2, 10364364), (3, 6909576), (4, 5182182), (6, 3454788), (8, 2591091), (9, 2303192), (12, 1727394), (18, 1151596), (24, 863697), (36, 575798), (67, 309384), (72, 287899), (134, 154692), (201, 103128), (268, 77346), (402, 51564), (536, 38673), (603, 34376), (804, 25782), (1206, 17188), (1608, 12891), (2412, 8594), (4297, 4824)]