20907908

素因数分解:

$2^2\times 7^5\times {\mathrm{311}}^1$

素因数の和:350

約数の個数: 36

約数和(自身を含む): 42823872

約数和(自身を除く): 21915964

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 311, 343, 622, 686, 1244, 1372, 2177, 2401, 4354, 4802, 8708, 9604, 15239, 16807, 30478, 33614, 60956, 67228, 106673, 213346, 426692, 746711, 1493422, 2986844, 5226977, 10453954, 20907908]

約数ペア:

[(1, 20907908), (2, 10453954), (4, 5226977), (7, 2986844), (14, 1493422), (28, 746711), (49, 426692), (98, 213346), (196, 106673), (311, 67228), (343, 60956), (622, 33614), (686, 30478), (1244, 16807), (1372, 15239), (2177, 9604), (2401, 8708), (4354, 4802)]