28475825

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 43330560

約数和(自身を除く): 14854735

約数列:

[1, 5, 7, 25, 29, 31, 35, 145, 155, 175, 181, 203, 217, 725, 775, 899, 905, 1015, 1085, 1267, 4495, 4525, 5075, 5249, 5425, 5611, 6293, 6335, 22475, 26245, 28055, 31465, 31675, 36743, 39277, 131225, 140275, 157325, 162719, 183715, 196385, 813595, 918575, 981925, 1139033, 4067975, 5695165, 28475825]

約数ペア:

[(1, 28475825), (5, 5695165), (7, 4067975), (25, 1139033), (29, 981925), (31, 918575), (35, 813595), (145, 196385), (155, 183715), (175, 162719), (181, 157325), (203, 140275), (217, 131225), (725, 39277), (775, 36743), (899, 31675), (905, 31465), (1015, 28055), (1085, 26245), (1267, 22475), (4495, 6335), (4525, 6293), (5075, 5611), (5249, 5425)]