18541520

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4373}}^1$

素因数の和:4439

約数の個数: 40

約数和(自身を含む): 43932456

約数和(自身を除く): 25390936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4373, 8746, 17492, 21865, 34984, 43730, 69968, 87460, 174920, 231769, 349840, 463538, 927076, 1158845, 1854152, 2317690, 3708304, 4635380, 9270760, 18541520]

約数ペア:

[(1, 18541520), (2, 9270760), (4, 4635380), (5, 3708304), (8, 2317690), (10, 1854152), (16, 1158845), (20, 927076), (40, 463538), (53, 349840), (80, 231769), (106, 174920), (212, 87460), (265, 69968), (424, 43730), (530, 34984), (848, 21865), (1060, 17492), (2120, 8746), (4240, 4373)]