21580592

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:258

約数の個数: 60

約数和(自身を含む): 46903248

約数和(自身を除く): 25322656

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 121, 142, 157, 176, 242, 284, 314, 484, 568, 628, 781, 968, 1136, 1256, 1562, 1727, 1936, 2512, 3124, 3454, 6248, 6908, 8591, 11147, 12496, 13816, 17182, 18997, 22294, 27632, 34364, 37994, 44588, 68728, 75988, 89176, 122617, 137456, 151976, 178352, 245234, 303952, 490468, 980936, 1348787, 1961872, 2697574, 5395148, 10790296, 21580592]

約数ペア:

[(1, 21580592), (2, 10790296), (4, 5395148), (8, 2697574), (11, 1961872), (16, 1348787), (22, 980936), (44, 490468), (71, 303952), (88, 245234), (121, 178352), (142, 151976), (157, 137456), (176, 122617), (242, 89176), (284, 75988), (314, 68728), (484, 44588), (568, 37994), (628, 34364), (781, 27632), (968, 22294), (1136, 18997), (1256, 17182), (1562, 13816), (1727, 12496), (1936, 11147), (2512, 8591), (3124, 6908), (3454, 6248)]