27780109

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{563}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 34719840

約数和(自身を除く): 6939731

約数列:

[1, 7, 19, 49, 53, 133, 371, 563, 931, 1007, 2597, 3941, 7049, 10697, 27587, 29839, 49343, 74879, 208873, 524153, 566941, 1462111, 3968587, 27780109]

約数ペア:

[(1, 27780109), (7, 3968587), (19, 1462111), (49, 566941), (53, 524153), (133, 208873), (371, 74879), (563, 49343), (931, 29839), (1007, 27587), (2597, 10697), (3941, 7049)]