19785848

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{509}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 38372400

約数和(自身を除く): 18586552

約数列:

[1, 2, 4, 8, 43, 86, 113, 172, 226, 344, 452, 509, 904, 1018, 2036, 4072, 4859, 9718, 19436, 21887, 38872, 43774, 57517, 87548, 115034, 175096, 230068, 460136, 2473231, 4946462, 9892924, 19785848]

約数ペア:

[(1, 19785848), (2, 9892924), (4, 4946462), (8, 2473231), (43, 460136), (86, 230068), (113, 175096), (172, 115034), (226, 87548), (344, 57517), (452, 43774), (509, 38872), (904, 21887), (1018, 19436), (2036, 9718), (4072, 4859)]