18720120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2137}}^1$

素因数の和:2224

約数の個数: 64

約数和(自身を含む): 56956320

約数和(自身を除く): 38236200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 73, 120, 146, 219, 292, 365, 438, 584, 730, 876, 1095, 1460, 1752, 2137, 2190, 2920, 4274, 4380, 6411, 8548, 8760, 10685, 12822, 17096, 21370, 25644, 32055, 42740, 51288, 64110, 85480, 128220, 156001, 256440, 312002, 468003, 624004, 780005, 936006, 1248008, 1560010, 1872012, 2340015, 3120020, 3744024, 4680030, 6240040, 9360060, 18720120]

約数ペア:

[(1, 18720120), (2, 9360060), (3, 6240040), (4, 4680030), (5, 3744024), (6, 3120020), (8, 2340015), (10, 1872012), (12, 1560010), (15, 1248008), (20, 936006), (24, 780005), (30, 624004), (40, 468003), (60, 312002), (73, 256440), (120, 156001), (146, 128220), (219, 85480), (292, 64110), (365, 51288), (438, 42740), (584, 32055), (730, 25644), (876, 21370), (1095, 17096), (1460, 12822), (1752, 10685), (2137, 8760), (2190, 8548), (2920, 6411), (4274, 4380)]