28721560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1531}}^1$

素因数の和:1616

約数の個数: 64

約数和(自身を含む): 75006720

約数和(自身を除く): 46285160

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, 1340, 1531, 1876, 2345, 2680, 3062, 3752, 4690, 6124, 7655, 9380, 10717, 12248, 15310, 18760, 21434, 30620, 42868, 53585, 61240, 85736, 102577, 107170, 205154, 214340, 410308, 428680, 512885, 718039, 820616, 1025770, 1436078, 2051540, 2872156, 3590195, 4103080, 5744312, 7180390, 14360780, 28721560]

約数ペア:

[(1, 28721560), (2, 14360780), (4, 7180390), (5, 5744312), (7, 4103080), (8, 3590195), (10, 2872156), (14, 2051540), (20, 1436078), (28, 1025770), (35, 820616), (40, 718039), (56, 512885), (67, 428680), (70, 410308), (134, 214340), (140, 205154), (268, 107170), (280, 102577), (335, 85736), (469, 61240), (536, 53585), (670, 42868), (938, 30620), (1340, 21434), (1531, 18760), (1876, 15310), (2345, 12248), (2680, 10717), (3062, 9380), (3752, 7655), (4690, 6124)]