18730160

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{911}}^1$

素因数の和:1181

約数の個数: 40

約数和(自身を含む): 43765056

約数和(自身を除く): 25034896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 911, 1028, 1285, 1822, 2056, 2570, 3644, 4112, 4555, 5140, 7288, 9110, 10280, 14576, 18220, 20560, 36440, 72880, 234127, 468254, 936508, 1170635, 1873016, 2341270, 3746032, 4682540, 9365080, 18730160]

約数ペア:

[(1, 18730160), (2, 9365080), (4, 4682540), (5, 3746032), (8, 2341270), (10, 1873016), (16, 1170635), (20, 936508), (40, 468254), (80, 234127), (257, 72880), (514, 36440), (911, 20560), (1028, 18220), (1285, 14576), (1822, 10280), (2056, 9110), (2570, 7288), (3644, 5140), (4112, 4555)]