20904478

素因数分解:

$2^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{983}}^1$

素因数の和:1037

約数の個数: 32

約数和(自身を含む): 37785600

約数和(自身を除く): 16881122

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 217, 343, 434, 686, 983, 1519, 1966, 3038, 6881, 10633, 13762, 21266, 30473, 48167, 60946, 96334, 213311, 337169, 426622, 674338, 1493177, 2986354, 10452239, 20904478]

約数ペア:

[(1, 20904478), (2, 10452239), (7, 2986354), (14, 1493177), (31, 674338), (49, 426622), (62, 337169), (98, 213311), (217, 96334), (343, 60946), (434, 48167), (686, 30473), (983, 21266), (1519, 13762), (1966, 10633), (3038, 6881)]