20172754945

素因数分解:

$5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1\times {\mathrm{20509}}^1$

素因数の和:20857

約数の個数: 32

約数和(自身を含む): 27998611200

約数和(自身を除く): 7825856255

約数列:

[1, 5, 7, 35, 157, 179, 785, 895, 1099, 1253, 5495, 6265, 20509, 28103, 102545, 140515, 143563, 196721, 717815, 983605, 3219913, 3671111, 16099565, 18355555, 22539391, 25697777, 112696955, 128488885, 576364427, 2881822135, 4034550989, 20172754945]

約数ペア:

[(1, 20172754945), (5, 4034550989), (7, 2881822135), (35, 576364427), (157, 128488885), (179, 112696955), (785, 25697777), (895, 22539391), (1099, 18355555), (1253, 16099565), (5495, 3671111), (6265, 3219913), (20509, 983605), (28103, 717815), (102545, 196721), (140515, 143563)]