21149907

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 30358080

約数和(自身を除く): 9208173

約数列:

[1, 3, 19, 57, 59, 177, 331, 361, 993, 1083, 1121, 3363, 6289, 18867, 19529, 21299, 58587, 63897, 119491, 358473, 371051, 1113153, 7049969, 21149907]

約数ペア:

[(1, 21149907), (3, 7049969), (19, 1113153), (57, 371051), (59, 358473), (177, 119491), (331, 63897), (361, 58587), (993, 21299), (1083, 19529), (1121, 18867), (3363, 6289)]