213449715

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{54521}}^1$

素因数の和:54564

約数の個数: 32

約数和(自身を含む): 392558400

約数和(自身を除く): 179108685

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 54521, 163563, 272605, 490689, 817815, 1472067, 1581109, 2453445, 4743327, 7360335, 7905545, 14229981, 23716635, 42689943, 71149905, 213449715]

約数ペア:

[(1, 213449715), (3, 71149905), (5, 42689943), (9, 23716635), (15, 14229981), (27, 7905545), (29, 7360335), (45, 4743327), (87, 2453445), (135, 1581109), (145, 1472067), (261, 817815), (435, 490689), (783, 272605), (1305, 163563), (3915, 54521)]