42740165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{21211}}^1$

素因数の和:21260

約数の個数: 16

約数和(自身を含む): 57017856

約数和(自身を除く): 14277691

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 21211, 106055, 275743, 657541, 1378715, 3287705, 8548033, 42740165]

約数ペア:

[(1, 42740165), (5, 8548033), (13, 3287705), (31, 1378715), (65, 657541), (155, 275743), (403, 106055), (2015, 21211)]