21902750

素因数分解:

$2^1\times 5^3\times {\mathrm{79}}^1\times {\mathrm{1109}}^1$

素因数の和:1205

約数の個数: 32

約数和(自身を含む): 41558400

約数和(自身を除く): 19655650

約数列:

[1, 2, 5, 10, 25, 50, 79, 125, 158, 250, 395, 790, 1109, 1975, 2218, 3950, 5545, 9875, 11090, 19750, 27725, 55450, 87611, 138625, 175222, 277250, 438055, 876110, 2190275, 4380550, 10951375, 21902750]

約数ペア:

[(1, 21902750), (2, 10951375), (5, 4380550), (10, 2190275), (25, 876110), (50, 438055), (79, 277250), (125, 175222), (158, 138625), (250, 87611), (395, 55450), (790, 27725), (1109, 19750), (1975, 11090), (2218, 9875), (3950, 5545)]