21242397

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{139}}^1\times {\mathrm{421}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 31430560

約数和(自身を除く): 10188163

約数列:

[1, 3, 11, 33, 121, 139, 363, 417, 421, 1263, 1529, 4587, 4631, 13893, 16819, 50457, 50941, 58519, 152823, 175557, 643709, 1931127, 7080799, 21242397]

約数ペア:

[(1, 21242397), (3, 7080799), (11, 1931127), (33, 643709), (121, 175557), (139, 152823), (363, 58519), (417, 50941), (421, 50457), (1263, 16819), (1529, 13893), (4587, 4631)]