20820675

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{769}}^1$

素因数の和:820

約数の個数: 36

約数和(自身を含む): 36377880

約数和(自身を除く): 15557205

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 361, 475, 769, 1083, 1425, 1805, 2307, 3845, 5415, 9025, 11535, 14611, 19225, 27075, 43833, 57675, 73055, 219165, 277609, 365275, 832827, 1095825, 1388045, 4164135, 6940225, 20820675]

約数ペア:

[(1, 20820675), (3, 6940225), (5, 4164135), (15, 1388045), (19, 1095825), (25, 832827), (57, 365275), (75, 277609), (95, 219165), (285, 73055), (361, 57675), (475, 43833), (769, 27075), (1083, 19225), (1425, 14611), (1805, 11535), (2307, 9025), (3845, 5415)]