251159211

素因数分解:

$3^5\times {\mathrm{47}}^1\times {\mathrm{21991}}^1$

素因数の和:22053

約数の個数: 24

約数和(自身を含む): 384244224

約数和(自身を除く): 133085013

約数列:

[1, 3, 9, 27, 47, 81, 141, 243, 423, 1269, 3807, 11421, 21991, 65973, 197919, 593757, 1033577, 1781271, 3100731, 5343813, 9302193, 27906579, 83719737, 251159211]

約数ペア:

[(1, 251159211), (3, 83719737), (9, 27906579), (27, 9302193), (47, 5343813), (81, 3100731), (141, 1781271), (243, 1033577), (423, 593757), (1269, 197919), (3807, 65973), (11421, 21991)]