20725295

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 28486080

約数和(自身を除く): 7760785

約数列:

[1, 5, 17, 19, 41, 85, 95, 205, 313, 323, 697, 779, 1565, 1615, 3485, 3895, 5321, 5947, 12833, 13243, 26605, 29735, 64165, 66215, 101099, 218161, 243827, 505495, 1090805, 1219135, 4145059, 20725295]

約数ペア:

[(1, 20725295), (5, 4145059), (17, 1219135), (19, 1090805), (41, 505495), (85, 243827), (95, 218161), (205, 101099), (313, 66215), (323, 64165), (697, 29735), (779, 26605), (1565, 13243), (1615, 12833), (3485, 5947), (3895, 5321)]