656795440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{16519}}^1$

素因数の和:16610

約数の個数: 80

約数和(自身を含む): 1769886720

約数和(自身を除く): 1113091280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 994, 1136, 1420, 1988, 2485, 2840, 3976, 4970, 5680, 7952, 9940, 16519, 19880, 33038, 39760, 66076, 82595, 115633, 132152, 165190, 231266, 264304, 330380, 462532, 578165, 660760, 925064, 1156330, 1172849, 1321520, 1850128, 2312660, 2345698, 4625320, 4691396, 5864245, 8209943, 9250640, 9382792, 11728490, 16419886, 18765584, 23456980, 32839772, 41049715, 46913960, 65679544, 82099430, 93827920, 131359088, 164198860, 328397720, 656795440]

約数ペア:

[(1, 656795440), (2, 328397720), (4, 164198860), (5, 131359088), (7, 93827920), (8, 82099430), (10, 65679544), (14, 46913960), (16, 41049715), (20, 32839772), (28, 23456980), (35, 18765584), (40, 16419886), (56, 11728490), (70, 9382792), (71, 9250640), (80, 8209943), (112, 5864245), (140, 4691396), (142, 4625320), (280, 2345698), (284, 2312660), (355, 1850128), (497, 1321520), (560, 1172849), (568, 1156330), (710, 925064), (994, 660760), (1136, 578165), (1420, 462532), (1988, 330380), (2485, 264304), (2840, 231266), (3976, 165190), (4970, 132152), (5680, 115633), (7952, 82595), (9940, 66076), (16519, 39760), (19880, 33038)]