19871025

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{4999}}^1$

素因数の和:5065

約数の個数: 24

約数和(自身を含む): 33480000

約数和(自身を除く): 13608975

約数列:

[1, 3, 5, 15, 25, 53, 75, 159, 265, 795, 1325, 3975, 4999, 14997, 24995, 74985, 124975, 264947, 374925, 794841, 1324735, 3974205, 6623675, 19871025]

約数ペア:

[(1, 19871025), (3, 6623675), (5, 3974205), (15, 1324735), (25, 794841), (53, 374925), (75, 264947), (159, 124975), (265, 74985), (795, 24995), (1325, 14997), (3975, 4999)]