20878227

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:412

約数の個数: 36

約数和(自身を含む): 33524400

約数和(自身を除く): 12646173

約数列:

[1, 3, 9, 17, 23, 51, 69, 153, 207, 289, 349, 391, 867, 1047, 1173, 2601, 3141, 3519, 5933, 6647, 8027, 17799, 19941, 24081, 53397, 59823, 72243, 100861, 136459, 302583, 409377, 907749, 1228131, 2319803, 6959409, 20878227]

約数ペア:

[(1, 20878227), (3, 6959409), (9, 2319803), (17, 1228131), (23, 907749), (51, 409377), (69, 302583), (153, 136459), (207, 100861), (289, 72243), (349, 59823), (391, 53397), (867, 24081), (1047, 19941), (1173, 17799), (2601, 8027), (3141, 6647), (3519, 5933)]