18721680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{78007}}^1$

素因数の和:78023

約数の個数: 40

約数和(自身を含む): 58037952

約数和(自身を除く): 39316272

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 78007, 156014, 234021, 312028, 390035, 468042, 624056, 780070, 936084, 1170105, 1248112, 1560140, 1872168, 2340210, 3120280, 3744336, 4680420, 6240560, 9360840, 18721680]

約数ペア:

[(1, 18721680), (2, 9360840), (3, 6240560), (4, 4680420), (5, 3744336), (6, 3120280), (8, 2340210), (10, 1872168), (12, 1560140), (15, 1248112), (16, 1170105), (20, 936084), (24, 780070), (30, 624056), (40, 468042), (48, 390035), (60, 312028), (80, 234021), (120, 156014), (240, 78007)]