21378512

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{15013}}^1$

素因数の和:15110

約数の個数: 20

約数和(自身を含む): 41889060

約数和(自身を除く): 20510548

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 15013, 30026, 60052, 120104, 240208, 1336157, 2672314, 5344628, 10689256, 21378512]

約数ペア:

[(1, 21378512), (2, 10689256), (4, 5344628), (8, 2672314), (16, 1336157), (89, 240208), (178, 120104), (356, 60052), (712, 30026), (1424, 15013)]