20963925

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4051}}^1$

素因数の和:4090

約数の個数: 36

約数和(自身を含む): 39190944

約数和(自身を除く): 18227019

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 4051, 5175, 12153, 20255, 36459, 60765, 93173, 101275, 182295, 279519, 303825, 465865, 838557, 911475, 1397595, 2329325, 4192785, 6987975, 20963925]

約数ペア:

[(1, 20963925), (3, 6987975), (5, 4192785), (9, 2329325), (15, 1397595), (23, 911475), (25, 838557), (45, 465865), (69, 303825), (75, 279519), (115, 182295), (207, 101275), (225, 93173), (345, 60765), (575, 36459), (1035, 20255), (1725, 12153), (4051, 5175)]