28975725

素因数分解:

$3^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:412

約数の個数: 60

約数和(自身を含む): 55139700

約数和(自身を除く): 26163975

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 81, 123, 135, 205, 225, 349, 369, 405, 615, 675, 1025, 1047, 1107, 1745, 1845, 2025, 3075, 3141, 3321, 5235, 5535, 8725, 9225, 9423, 14309, 15705, 16605, 26175, 27675, 28269, 42927, 47115, 71545, 78525, 83025, 128781, 141345, 214635, 235575, 357725, 386343, 643905, 706725, 1073175, 1159029, 1931715, 3219525, 5795145, 9658575, 28975725]

約数ペア:

[(1, 28975725), (3, 9658575), (5, 5795145), (9, 3219525), (15, 1931715), (25, 1159029), (27, 1073175), (41, 706725), (45, 643905), (75, 386343), (81, 357725), (123, 235575), (135, 214635), (205, 141345), (225, 128781), (349, 83025), (369, 78525), (405, 71545), (615, 47115), (675, 42927), (1025, 28269), (1047, 27675), (1107, 26175), (1745, 16605), (1845, 15705), (2025, 14309), (3075, 9423), (3141, 9225), (3321, 8725), (5235, 5535)]