20961255

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11743}}^1$

素因数の和:11775

約数の個数: 32

約数和(自身を含む): 40587264

約数和(自身を除く): 19626009

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11743, 35229, 58715, 82201, 176145, 199631, 246603, 411005, 598893, 998155, 1233015, 1397417, 2994465, 4192251, 6987085, 20961255]

約数ペア:

[(1, 20961255), (3, 6987085), (5, 4192251), (7, 2994465), (15, 1397417), (17, 1233015), (21, 998155), (35, 598893), (51, 411005), (85, 246603), (105, 199631), (119, 176145), (255, 82201), (357, 58715), (595, 35229), (1785, 11743)]