28151825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 40830720

約数和(自身を除く): 12678895

約数列:

[1, 5, 13, 19, 25, 47, 65, 95, 97, 235, 247, 325, 475, 485, 611, 893, 1175, 1235, 1261, 1843, 2425, 3055, 4465, 4559, 6175, 6305, 9215, 11609, 15275, 22325, 22795, 23959, 31525, 46075, 58045, 59267, 86621, 113975, 119795, 290225, 296335, 433105, 598975, 1126073, 1481675, 2165525, 5630365, 28151825]

約数ペア:

[(1, 28151825), (5, 5630365), (13, 2165525), (19, 1481675), (25, 1126073), (47, 598975), (65, 433105), (95, 296335), (97, 290225), (235, 119795), (247, 113975), (325, 86621), (475, 59267), (485, 58045), (611, 46075), (893, 31525), (1175, 23959), (1235, 22795), (1261, 22325), (1843, 15275), (2425, 11609), (3055, 9215), (4465, 6305), (4559, 6175)]