21006906179

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{101183}}^1$

素因数の和:101439

約数の個数: 24

約数和(自身を含む): 25838346240

約数和(自身を除く): 4831440061

約数列:

[1, 7, 19, 49, 133, 223, 931, 1561, 4237, 10927, 29659, 101183, 207613, 708281, 1922477, 4957967, 13457339, 22563809, 94201373, 157946663, 428712371, 1105626641, 3000986597, 21006906179]

約数ペア:

[(1, 21006906179), (7, 3000986597), (19, 1105626641), (49, 428712371), (133, 157946663), (223, 94201373), (931, 22563809), (1561, 13457339), (4237, 4957967), (10927, 1922477), (29659, 708281), (101183, 207613)]