21298020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{2591}}^1$

素因数の和:2740

約数の個数: 48

約数和(自身を含む): 60092928

約数和(自身を除く): 38794908

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 274, 411, 548, 685, 822, 1370, 1644, 2055, 2591, 2740, 4110, 5182, 7773, 8220, 10364, 12955, 15546, 25910, 31092, 38865, 51820, 77730, 155460, 354967, 709934, 1064901, 1419868, 1774835, 2129802, 3549670, 4259604, 5324505, 7099340, 10649010, 21298020]

約数ペア:

[(1, 21298020), (2, 10649010), (3, 7099340), (4, 5324505), (5, 4259604), (6, 3549670), (10, 2129802), (12, 1774835), (15, 1419868), (20, 1064901), (30, 709934), (60, 354967), (137, 155460), (274, 77730), (411, 51820), (548, 38865), (685, 31092), (822, 25910), (1370, 15546), (1644, 12955), (2055, 10364), (2591, 8220), (2740, 7773), (4110, 5182)]