28974820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{3089}}^1$

素因数の和:3172

約数の個数: 48

約数和(自身を含む): 70600320

約数和(自身を除く): 41625500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2345, 3089, 4690, 6178, 9380, 12356, 15445, 21623, 30890, 43246, 61780, 86492, 108115, 206963, 216230, 413926, 432460, 827852, 1034815, 1448741, 2069630, 2897482, 4139260, 5794964, 7243705, 14487410, 28974820]

約数ペア:

[(1, 28974820), (2, 14487410), (4, 7243705), (5, 5794964), (7, 4139260), (10, 2897482), (14, 2069630), (20, 1448741), (28, 1034815), (35, 827852), (67, 432460), (70, 413926), (134, 216230), (140, 206963), (268, 108115), (335, 86492), (469, 61780), (670, 43246), (938, 30890), (1340, 21623), (1876, 15445), (2345, 12356), (3089, 9380), (4690, 6178)]