2021271775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{787}}^1\times {\mathrm{5407}}^1$

素因数の和:6223

約数の個数: 24

約数和(自身を含む): 2642132480

約数和(自身を除く): 620860705

約数列:

[1, 5, 19, 25, 95, 475, 787, 3935, 5407, 14953, 19675, 27035, 74765, 102733, 135175, 373825, 513665, 2568325, 4255309, 21276545, 80850871, 106382725, 404254355, 2021271775]

約数ペア:

[(1, 2021271775), (5, 404254355), (19, 106382725), (25, 80850871), (95, 21276545), (475, 4255309), (787, 2568325), (3935, 513665), (5407, 373825), (14953, 135175), (19675, 102733), (27035, 74765)]