18890517

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{509}}^1$

素因数の和:740

約数の個数: 16

約数和(自身を含む): 25704000

約数和(自身を除く): 6813483

約数列:

[1, 3, 89, 139, 267, 417, 509, 1527, 12371, 37113, 45301, 70751, 135903, 212253, 6296839, 18890517]

約数ペア:

[(1, 18890517), (3, 6296839), (89, 212253), (139, 135903), (267, 70751), (417, 45301), (509, 37113), (1527, 12371)]