21054177

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 34864128

約数和(自身を除く): 13809951

約数列:

[1, 3, 9, 17, 23, 31, 51, 69, 93, 153, 193, 207, 279, 391, 527, 579, 713, 1173, 1581, 1737, 2139, 3281, 3519, 4439, 4743, 5983, 6417, 9843, 12121, 13317, 17949, 29529, 36363, 39951, 53847, 75463, 101711, 109089, 137609, 226389, 305133, 412827, 679167, 915399, 1238481, 2339353, 7018059, 21054177]

約数ペア:

[(1, 21054177), (3, 7018059), (9, 2339353), (17, 1238481), (23, 915399), (31, 679167), (51, 412827), (69, 305133), (93, 226389), (153, 137609), (193, 109089), (207, 101711), (279, 75463), (391, 53847), (527, 39951), (579, 36363), (713, 29529), (1173, 17949), (1581, 13317), (1737, 12121), (2139, 9843), (3281, 6417), (3519, 5983), (4439, 4743)]