20829165

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1667}}^1$

素因数の和:1706

約数の個数: 48

約数和(自身を含む): 41072832

約数和(自身を除く): 20243667

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 357, 595, 735, 833, 1667, 1785, 2499, 4165, 5001, 8335, 11669, 12495, 25005, 28339, 35007, 58345, 81683, 85017, 141695, 175035, 198373, 245049, 408415, 425085, 595119, 991865, 1225245, 1388611, 2975595, 4165833, 6943055, 20829165]

約数ペア:

[(1, 20829165), (3, 6943055), (5, 4165833), (7, 2975595), (15, 1388611), (17, 1225245), (21, 991865), (35, 595119), (49, 425085), (51, 408415), (85, 245049), (105, 198373), (119, 175035), (147, 141695), (245, 85017), (255, 81683), (357, 58345), (595, 35007), (735, 28339), (833, 25005), (1667, 12495), (1785, 11669), (2499, 8335), (4165, 5001)]