19951355

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1307}}^1$

素因数の和:1426

約数の個数: 16

約数和(自身を含む): 24862464

約数和(自身を除く): 4911109

約数列:

[1, 5, 43, 71, 215, 355, 1307, 3053, 6535, 15265, 56201, 92797, 281005, 463985, 3990271, 19951355]

約数ペア:

[(1, 19951355), (5, 3990271), (43, 463985), (71, 281005), (215, 92797), (355, 56201), (1307, 15265), (3053, 6535)]