20761965

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3469}}^1$

素因数の和:3506

約数の個数: 48

約数和(自身を含む): 43305600

約数和(自身を除く): 22543635

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3469, 5985, 10407, 17345, 24283, 31221, 52035, 65911, 72849, 121415, 156105, 197733, 218547, 329555, 364245, 461377, 593199, 988665, 1092735, 1384131, 2306885, 2965995, 4152393, 6920655, 20761965]

約数ペア:

[(1, 20761965), (3, 6920655), (5, 4152393), (7, 2965995), (9, 2306885), (15, 1384131), (19, 1092735), (21, 988665), (35, 593199), (45, 461377), (57, 364245), (63, 329555), (95, 218547), (105, 197733), (133, 156105), (171, 121415), (285, 72849), (315, 65911), (399, 52035), (665, 31221), (855, 24283), (1197, 17345), (1995, 10407), (3469, 5985)]