21312278

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{839}}^1\times {\mathrm{977}}^1$

素因数の和:1831

約数の個数: 16

約数和(自身を含む): 34503840

約数和(自身を除く): 13191562

約数列:

[1, 2, 13, 26, 839, 977, 1678, 1954, 10907, 12701, 21814, 25402, 819703, 1639406, 10656139, 21312278]

約数ペア:

[(1, 21312278), (2, 10656139), (13, 1639406), (26, 819703), (839, 25402), (977, 21814), (1678, 12701), (1954, 10907)]