21471784

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 41553000

約数和(自身を除く): 20081216

約数列:

[1, 2, 4, 8, 53, 89, 106, 178, 212, 356, 424, 569, 712, 1138, 2276, 4552, 4717, 9434, 18868, 30157, 37736, 50641, 60314, 101282, 120628, 202564, 241256, 405128, 2683973, 5367946, 10735892, 21471784]

約数ペア:

[(1, 21471784), (2, 10735892), (4, 5367946), (8, 2683973), (53, 405128), (89, 241256), (106, 202564), (178, 120628), (212, 101282), (356, 60314), (424, 50641), (569, 37736), (712, 30157), (1138, 18868), (2276, 9434), (4552, 4717)]