21861875

素因数分解:

$5^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:309

約数の個数: 40

約数和(自身を含む): 32989440

約数和(自身を除く): 11127565

約数列:

[1, 5, 7, 19, 25, 35, 95, 125, 133, 175, 263, 475, 625, 665, 875, 1315, 1841, 2375, 3325, 4375, 4997, 6575, 9205, 11875, 16625, 24985, 32875, 34979, 46025, 83125, 124925, 164375, 174895, 230125, 624625, 874475, 1150625, 3123125, 4372375, 21861875]

約数ペア:

[(1, 21861875), (5, 4372375), (7, 3123125), (19, 1150625), (25, 874475), (35, 624625), (95, 230125), (125, 174895), (133, 164375), (175, 124925), (263, 83125), (475, 46025), (625, 34979), (665, 32875), (875, 24985), (1315, 16625), (1841, 11875), (2375, 9205), (3325, 6575), (4375, 4997)]