678860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 1759296

約数和(自身を除く): 1080436

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 373, 455, 746, 910, 1492, 1820, 1865, 2611, 3730, 4849, 5222, 7460, 9698, 10444, 13055, 19396, 24245, 26110, 33943, 48490, 52220, 67886, 96980, 135772, 169715, 339430, 678860]

約数ペア:

[(1, 678860), (2, 339430), (4, 169715), (5, 135772), (7, 96980), (10, 67886), (13, 52220), (14, 48490), (20, 33943), (26, 26110), (28, 24245), (35, 19396), (52, 13055), (65, 10444), (70, 9698), (91, 7460), (130, 5222), (140, 4849), (182, 3730), (260, 2611), (364, 1865), (373, 1820), (455, 1492), (746, 910)]