19211660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3889}}^1$

素因数の和:3930

約数の個数: 48

約数和(自身を含む): 45746400

約数和(自身を除く): 26534740

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 3889, 4940, 7778, 15556, 19445, 38890, 50557, 73891, 77780, 101114, 147782, 202228, 252785, 295564, 369455, 505570, 738910, 960583, 1011140, 1477820, 1921166, 3842332, 4802915, 9605830, 19211660]

約数ペア:

[(1, 19211660), (2, 9605830), (4, 4802915), (5, 3842332), (10, 1921166), (13, 1477820), (19, 1011140), (20, 960583), (26, 738910), (38, 505570), (52, 369455), (65, 295564), (76, 252785), (95, 202228), (130, 147782), (190, 101114), (247, 77780), (260, 73891), (380, 50557), (494, 38890), (988, 19445), (1235, 15556), (2470, 7778), (3889, 4940)]