18981855

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^2$

素因数の和:328

約数の個数: 36

約数和(自身を含む): 34867560

約数和(自身を除く): 15885705

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 149, 171, 285, 447, 745, 855, 1341, 2235, 2831, 6705, 8493, 14155, 22201, 25479, 42465, 66603, 111005, 127395, 199809, 333015, 421819, 999045, 1265457, 2109095, 3796371, 6327285, 18981855]

約数ペア:

[(1, 18981855), (3, 6327285), (5, 3796371), (9, 2109095), (15, 1265457), (19, 999045), (45, 421819), (57, 333015), (95, 199809), (149, 127395), (171, 111005), (285, 66603), (447, 42465), (745, 25479), (855, 22201), (1341, 14155), (2235, 8493), (2831, 6705)]