18720604

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{587}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 40303872

約数和(自身を除く): 21583268

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 67, 68, 119, 134, 238, 268, 469, 476, 587, 938, 1139, 1174, 1876, 2278, 2348, 4109, 4556, 7973, 8218, 9979, 15946, 16436, 19958, 31892, 39329, 39916, 69853, 78658, 139706, 157316, 275303, 279412, 550606, 668593, 1101212, 1337186, 2674372, 4680151, 9360302, 18720604]

約数ペア:

[(1, 18720604), (2, 9360302), (4, 4680151), (7, 2674372), (14, 1337186), (17, 1101212), (28, 668593), (34, 550606), (67, 279412), (68, 275303), (119, 157316), (134, 139706), (238, 78658), (268, 69853), (469, 39916), (476, 39329), (587, 31892), (938, 19958), (1139, 16436), (1174, 15946), (1876, 9979), (2278, 8218), (2348, 7973), (4109, 4556)]