18901395

素因数分解:

$3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2819}}^1$

素因数の和:2979

約数の個数: 24

約数和(自身を含む): 32994000

約数和(自身を除く): 14092605

約数列:

[1, 3, 5, 9, 15, 45, 149, 447, 745, 1341, 2235, 2819, 6705, 8457, 14095, 25371, 42285, 126855, 420031, 1260093, 2100155, 3780279, 6300465, 18901395]

約数ペア:

[(1, 18901395), (3, 6300465), (5, 3780279), (9, 2100155), (15, 1260093), (45, 420031), (149, 126855), (447, 42285), (745, 25371), (1341, 14095), (2235, 8457), (2819, 6705)]