21102213

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{4073}}^1$

素因数の和:4244

約数の個数: 16

約数和(自身を含む): 30897216

約数和(自身を除く): 9795003

約数列:

[1, 3, 11, 33, 157, 471, 1727, 4073, 5181, 12219, 44803, 134409, 639461, 1918383, 7034071, 21102213]

約数ペア:

[(1, 21102213), (3, 7034071), (11, 1918383), (33, 639461), (157, 134409), (471, 44803), (1727, 12219), (4073, 5181)]