21615152

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103919}}^1$

素因数の和:103940

約数の個数: 20

約数和(自身を含む): 45101280

約数和(自身を除く): 23486128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103919, 207838, 415676, 831352, 1350947, 1662704, 2701894, 5403788, 10807576, 21615152]

約数ペア:

[(1, 21615152), (2, 10807576), (4, 5403788), (8, 2701894), (13, 1662704), (16, 1350947), (26, 831352), (52, 415676), (104, 207838), (208, 103919)]