28080180

素因数分解:

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

素因数の和:2225

約数の個数: 72

約数和(自身を含む): 86383752

約数和(自身を除く): 58303572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 2137, 2190, 2628, 3285, 4274, 4380, 6411, 6570, 8548, 10685, 12822, 13140, 19233, 21370, 25644, 32055, 38466, 42740, 64110, 76932, 96165, 128220, 156001, 192330, 312002, 384660, 468003, 624004, 780005, 936006, 1404009, 1560010, 1872012, 2340015, 2808018, 3120020, 4680030, 5616036, 7020045, 9360060, 14040090, 28080180]

約数ペア:

[(1, 28080180), (2, 14040090), (3, 9360060), (4, 7020045), (5, 5616036), (6, 4680030), (9, 3120020), (10, 2808018), (12, 2340015), (15, 1872012), (18, 1560010), (20, 1404009), (30, 936006), (36, 780005), (45, 624004), (60, 468003), (73, 384660), (90, 312002), (146, 192330), (180, 156001), (219, 128220), (292, 96165), (365, 76932), (438, 64110), (657, 42740), (730, 38466), (876, 32055), (1095, 25644), (1314, 21370), (1460, 19233), (2137, 13140), (2190, 12822), (2628, 10685), (3285, 8548), (4274, 6570), (4380, 6411)]