21691870

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{277}}^1$

素因数の和:516

約数の個数: 32

約数和(自身を含む): 40352256

約数和(自身を除く): 18660386

約数列:

[1, 2, 5, 10, 41, 82, 191, 205, 277, 382, 410, 554, 955, 1385, 1910, 2770, 7831, 11357, 15662, 22714, 39155, 52907, 56785, 78310, 105814, 113570, 264535, 529070, 2169187, 4338374, 10845935, 21691870]

約数ペア:

[(1, 21691870), (2, 10845935), (5, 4338374), (10, 2169187), (41, 529070), (82, 264535), (191, 113570), (205, 105814), (277, 78310), (382, 56785), (410, 52907), (554, 39155), (955, 22714), (1385, 15662), (1910, 11357), (2770, 7831)]