21267081

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:418

約数の個数: 36

約数和(自身を含む): 34441680

約数和(自身を除く): 13174599

約数列:

[1, 3, 9, 11, 33, 59, 99, 121, 177, 331, 363, 531, 649, 993, 1089, 1947, 2979, 3641, 5841, 7139, 10923, 19529, 21417, 32769, 40051, 58587, 64251, 120153, 175761, 214819, 360459, 644457, 1933371, 2363009, 7089027, 21267081]

約数ペア:

[(1, 21267081), (3, 7089027), (9, 2363009), (11, 1933371), (33, 644457), (59, 360459), (99, 214819), (121, 175761), (177, 120153), (331, 64251), (363, 58587), (531, 40051), (649, 32769), (993, 21417), (1089, 19529), (1947, 10923), (2979, 7139), (3641, 5841)]