28148253

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 46817280

約数和(自身を除く): 18669027

約数列:

[1, 3, 7, 19, 21, 47, 57, 79, 133, 141, 237, 329, 361, 399, 553, 893, 987, 1083, 1501, 1659, 2527, 2679, 3713, 4503, 6251, 7581, 10507, 11139, 16967, 18753, 25991, 28519, 31521, 50901, 70547, 77973, 85557, 118769, 199633, 211641, 356307, 493829, 598899, 1340393, 1481487, 4021179, 9382751, 28148253]

約数ペア:

[(1, 28148253), (3, 9382751), (7, 4021179), (19, 1481487), (21, 1340393), (47, 598899), (57, 493829), (79, 356307), (133, 211641), (141, 199633), (237, 118769), (329, 85557), (361, 77973), (399, 70547), (553, 50901), (893, 31521), (987, 28519), (1083, 25991), (1501, 18753), (1659, 16967), (2527, 11139), (2679, 10507), (3713, 7581), (4503, 6251)]