21299031

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1$

素因数の和:317

約数の個数: 40

約数和(自身を含む): 34760880

約数和(自身を除く): 13461849

約数列:

[1, 3, 9, 13, 27, 39, 81, 113, 117, 179, 339, 351, 537, 1017, 1053, 1469, 1611, 2327, 3051, 4407, 4833, 6981, 9153, 13221, 14499, 20227, 20943, 39663, 60681, 62829, 118989, 182043, 188487, 262951, 546129, 788853, 1638387, 2366559, 7099677, 21299031]

約数ペア:

[(1, 21299031), (3, 7099677), (9, 2366559), (13, 1638387), (27, 788853), (39, 546129), (81, 262951), (113, 188487), (117, 182043), (179, 118989), (339, 62829), (351, 60681), (537, 39663), (1017, 20943), (1053, 20227), (1469, 14499), (1611, 13221), (2327, 9153), (3051, 6981), (4407, 4833)]