19380680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2591}}^1$

素因数の和:2630

約数の個数: 64

約数和(自身を含む): 50388480

約数和(自身を除く): 31007800

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2591, 3740, 5182, 7480, 10364, 12955, 20728, 25910, 28501, 44047, 51820, 57002, 88094, 103640, 114004, 142505, 176188, 220235, 228008, 285010, 352376, 440470, 484517, 570020, 880940, 969034, 1140040, 1761880, 1938068, 2422585, 3876136, 4845170, 9690340, 19380680]

約数ペア:

[(1, 19380680), (2, 9690340), (4, 4845170), (5, 3876136), (8, 2422585), (10, 1938068), (11, 1761880), (17, 1140040), (20, 969034), (22, 880940), (34, 570020), (40, 484517), (44, 440470), (55, 352376), (68, 285010), (85, 228008), (88, 220235), (110, 176188), (136, 142505), (170, 114004), (187, 103640), (220, 88094), (340, 57002), (374, 51820), (440, 44047), (680, 28501), (748, 25910), (935, 20728), (1496, 12955), (1870, 10364), (2591, 7480), (3740, 5182)]