28198120

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 66251520

約数和(自身を除く): 38053400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 53, 94, 106, 188, 212, 235, 265, 283, 376, 424, 470, 530, 566, 940, 1060, 1132, 1415, 1880, 2120, 2264, 2491, 2830, 4982, 5660, 9964, 11320, 12455, 13301, 14999, 19928, 24910, 26602, 29998, 49820, 53204, 59996, 66505, 74995, 99640, 106408, 119992, 133010, 149990, 266020, 299980, 532040, 599960, 704953, 1409906, 2819812, 3524765, 5639624, 7049530, 14099060, 28198120]

約数ペア:

[(1, 28198120), (2, 14099060), (4, 7049530), (5, 5639624), (8, 3524765), (10, 2819812), (20, 1409906), (40, 704953), (47, 599960), (53, 532040), (94, 299980), (106, 266020), (188, 149990), (212, 133010), (235, 119992), (265, 106408), (283, 99640), (376, 74995), (424, 66505), (470, 59996), (530, 53204), (566, 49820), (940, 29998), (1060, 26602), (1132, 24910), (1415, 19928), (1880, 14999), (2120, 13301), (2264, 12455), (2491, 11320), (2830, 9964), (4982, 5660)]