16420880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:157

約数の個数: 120

約数和(自身を含む): 45800640

約数和(自身を除く): 29379760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 59, 70, 71, 80, 98, 112, 118, 140, 142, 196, 236, 245, 280, 284, 295, 355, 392, 413, 472, 490, 497, 560, 568, 590, 710, 784, 826, 944, 980, 994, 1136, 1180, 1420, 1652, 1960, 1988, 2065, 2360, 2485, 2840, 2891, 3304, 3479, 3920, 3976, 4130, 4189, 4720, 4970, 5680, 5782, 6608, 6958, 7952, 8260, 8378, 9940, 11564, 13916, 14455, 16520, 16756, 17395, 19880, 20945, 23128, 27832, 28910, 29323, 33040, 33512, 34790, 39760, 41890, 46256, 55664, 57820, 58646, 67024, 69580, 83780, 115640, 117292, 139160, 146615, 167560, 205261, 231280, 234584, 278320, 293230, 335120, 410522, 469168, 586460, 821044, 1026305, 1172920, 1642088, 2052610, 2345840, 3284176, 4105220, 8210440, 16420880]

約数ペア:

[(1, 16420880), (2, 8210440), (4, 4105220), (5, 3284176), (7, 2345840), (8, 2052610), (10, 1642088), (14, 1172920), (16, 1026305), (20, 821044), (28, 586460), (35, 469168), (40, 410522), (49, 335120), (56, 293230), (59, 278320), (70, 234584), (71, 231280), (80, 205261), (98, 167560), (112, 146615), (118, 139160), (140, 117292), (142, 115640), (196, 83780), (236, 69580), (245, 67024), (280, 58646), (284, 57820), (295, 55664), (355, 46256), (392, 41890), (413, 39760), (472, 34790), (490, 33512), (497, 33040), (560, 29323), (568, 28910), (590, 27832), (710, 23128), (784, 20945), (826, 19880), (944, 17395), (980, 16756), (994, 16520), (1136, 14455), (1180, 13916), (1420, 11564), (1652, 9940), (1960, 8378), (1988, 8260), (2065, 7952), (2360, 6958), (2485, 6608), (2840, 5782), (2891, 5680), (3304, 4970), (3479, 4720), (3920, 4189), (3976, 4130)]