20585080

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7681}}^1$

素因数の和:7759

約数の個数: 32

約数和(自身を含む): 47013840

約数和(自身を除く): 26428760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7681, 15362, 30724, 38405, 61448, 76810, 153620, 307240, 514627, 1029254, 2058508, 2573135, 4117016, 5146270, 10292540, 20585080]

約数ペア:

[(1, 20585080), (2, 10292540), (4, 5146270), (5, 4117016), (8, 2573135), (10, 2058508), (20, 1029254), (40, 514627), (67, 307240), (134, 153620), (268, 76810), (335, 61448), (536, 38405), (670, 30724), (1340, 15362), (2680, 7681)]