21378507

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{971}}^1$

素因数の和:1194

約数の個数: 16

約数和(自身を含む): 29393280

約数和(自身を除く): 8014773

約数列:

[1, 3, 41, 123, 179, 537, 971, 2913, 7339, 22017, 39811, 119433, 173809, 521427, 7126169, 21378507]

約数ペア:

[(1, 21378507), (3, 7126169), (41, 521427), (123, 173809), (179, 119433), (537, 39811), (971, 22017), (2913, 7339)]