19491640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1039}}^1$

素因数の和:1124

約数の個数: 64

約数和(自身を含む): 50918400

約数和(自身を除く): 31426760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 1039, 1340, 1876, 2078, 2345, 2680, 3752, 4156, 4690, 5195, 7273, 8312, 9380, 10390, 14546, 18760, 20780, 29092, 36365, 41560, 58184, 69613, 72730, 139226, 145460, 278452, 290920, 348065, 487291, 556904, 696130, 974582, 1392260, 1949164, 2436455, 2784520, 3898328, 4872910, 9745820, 19491640]

約数ペア:

[(1, 19491640), (2, 9745820), (4, 4872910), (5, 3898328), (7, 2784520), (8, 2436455), (10, 1949164), (14, 1392260), (20, 974582), (28, 696130), (35, 556904), (40, 487291), (56, 348065), (67, 290920), (70, 278452), (134, 145460), (140, 139226), (268, 72730), (280, 69613), (335, 58184), (469, 41560), (536, 36365), (670, 29092), (938, 20780), (1039, 18760), (1340, 14546), (1876, 10390), (2078, 9380), (2345, 8312), (2680, 7273), (3752, 5195), (4156, 4690)]