30920981

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 40040448

約数和(自身を除く): 9119467

約数列:

[1, 7, 13, 31, 91, 97, 113, 217, 403, 679, 791, 1261, 1469, 2821, 3007, 3503, 8827, 10283, 10961, 21049, 24521, 39091, 45539, 76727, 142493, 273637, 318773, 339791, 997451, 2378537, 4417283, 30920981]

約数ペア:

[(1, 30920981), (7, 4417283), (13, 2378537), (31, 997451), (91, 339791), (97, 318773), (113, 273637), (217, 142493), (403, 76727), (679, 45539), (791, 39091), (1261, 24521), (1469, 21049), (2821, 10961), (3007, 10283), (3503, 8827)]